CVE-2021-3759

A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.

The Linux Kernel, the operating system core itself.

Security Fix(es):

A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.(CVE-2021-3759)

A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality.(CVE-2021-3753)

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)

• kernel: avoid cyclic entity chains due to malformed USB descriptors (CVE-2020-0404)

• kernel: integer overflow in k_ascii() in drivers/tty/vt/keyboard.c (CVE-2020-13974)

• kernel: out-of-bounds read in bpf_skb_change_head() of filter.c due to a use-after-free (CVE-2021-0941)

• kernel: joydev: zero size passed to joydev_handle_JSIOCSBTNMAP() (CVE-2021-3612)

• kernel: reading /proc/sysvipc/shm does not scale with large shared memory segment counts (CVE-2021-3669)

• kernel: out-of-bound Read in qrtr_endpoint_post in net/qrtr/qrtr.c (CVE-2021-3743)

• kernel: crypto: ccp - fix resource leaks in ccp_run_aes_gcm_cmd() (CVE-2021-3744)

• kernel: possible use-after-free in bluetooth module (CVE-2021-3752)

• kernel: unaccounted ipc objects in Linux kernel lead to breaking memcg limits and DoS attacks (CVE-2021-3759)

• kernel: DoS in ccp_run_aes_gcm_cmd() function (CVE-2021-3764)

• kernel: sctp: Invalid chunks may be used to remotely remove existing associations (CVE-2021-3772)

• kernel: lack of port sanity checking in natd and netfilter leads to exploit of OpenVPN clients (CVE-2021-3773)

• kernel: possible leak or coruption of data residing on hugetlbfs (CVE-2021-4002)

• kernel: security regression for CVE-2018-13405 (CVE-2021-4037)

• kernel: Buffer overwrite in decode_nfs_fh function (CVE-2021-4157)

• kernel: cgroup: Use open-time creds and namespace for migration perm checks (CVE-2021-4197)

• kernel: Race condition in races in sk_peer_pid and sk_peer_cred accesses (CVE-2021-4203)

• kernel: new DNS Cache Poisoning Attack based on ICMP fragment needed packets replies (CVE-2021-20322)

• hw: cpu: LFENCE/JMP Mitigation Update for CVE-2017-5715 (CVE-2021-26401)

• kernel: Local privilege escalation due to incorrect BPF JIT branch displacement computation (CVE-2021-29154)

• kernel: use-after-free in hso_free_net_device() in drivers/net/usb/hso.c (CVE-2021-37159)

• kernel: eBPF multiplication integer overflow in prealloc_elems_and_freelist() in kernel/bpf/stackmap.c leads to out-of-bounds write (CVE-2021-41864)

• kernel: Heap buffer overflow in firedtv driver (CVE-2021-42739)

• kernel: an array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (CVE-2021-43389)

• kernel: mwifiex_usb_recv() in drivers/net/wireless/marvell/mwifiex/usb.c allows an attacker to cause DoS via crafted USB device (CVE-2021-43976)

• kernel: use-after-free in the TEE subsystem (CVE-2021-44733)

• kernel: information leak in the IPv6 implementation (CVE-2021-45485)

• kernel: information leak in the IPv4 implementation (CVE-2021-45486)

• hw: cpu: intel: Branch History Injection (BHI) (CVE-2022-0001)

• hw: cpu: intel: Intra-Mode BTI (CVE-2022-0002)

• kernel: Local denial of service in bond_ipsec_add_sa (CVE-2022-0286)

• kernel: DoS in sctp_addto_chunk in net/sctp/sm_make_chunk.c (CVE-2022-0322)

• kernel: FUSE allows UAF reads of write() buffers, allowing theft of (partial) /etc/shadow hashes (CVE-2022-1011)

• kernel: use-after-free in nouveau kernel module (CVE-2020-27820)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.6 Release Notes linked from the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)

• kernel: avoid cyclic entity chains due to malformed USB descriptors (CVE-2020-0404)

• kernel: speculation on incompletely validated data on IBM Power9 (CVE-2020-4788)

• kernel: integer overflow in k_ascii() in drivers/tty/vt/keyboard.c (CVE-2020-13974)

• kernel: out-of-bounds read in bpf_skb_change_head() of filter.c due to a use-after-free (CVE-2021-0941)

• kernel: joydev: zero size passed to joydev_handle_JSIOCSBTNMAP() (CVE-2021-3612)

• kernel: reading /proc/sysvipc/shm does not scale with large shared memory segment counts (CVE-2021-3669)

• kernel: out-of-bound Read in qrtr_endpoint_post in net/qrtr/qrtr.c (CVE-2021-3743)

• kernel: crypto: ccp - fix resource leaks in ccp_run_aes_gcm_cmd() (CVE-2021-3744)

• kernel: possible use-after-free in bluetooth module (CVE-2021-3752)

• kernel: unaccounted ipc objects in Linux kernel lead to breaking memcg limits and DoS attacks (CVE-2021-3759)

• kernel: DoS in ccp_run_aes_gcm_cmd() function (CVE-2021-3764)

• kernel: sctp: Invalid chunks may be used to remotely remove existing associations (CVE-2021-3772)

• kernel: lack of port sanity checking in natd and netfilter leads to exploit of OpenVPN clients (CVE-2021-3773)

• kernel: possible leak or coruption of data residing on hugetlbfs (CVE-2021-4002)

• kernel: security regression for CVE-2018-13405 (CVE-2021-4037)

• kernel: Buffer overwrite in decode_nfs_fh function (CVE-2021-4157)

• kernel: cgroup: Use open-time creds and namespace for migration perm checks (CVE-2021-4197)

• kernel: Race condition in races in sk_peer_pid and sk_peer_cred accesses (CVE-2021-4203)

• kernel: new DNS Cache Poisoning Attack based on ICMP fragment needed packets replies (CVE-2021-20322)

• kernel: arm: SIGPAGE information disclosure vulnerability (CVE-2021-21781)

• hw: cpu: LFENCE/JMP Mitigation Update for CVE-2017-5715 (CVE-2021-26401)

• kernel: Local privilege escalation due to incorrect BPF JIT branch displacement computation (CVE-2021-29154)

• kernel: use-after-free in hso_free_net_device() in drivers/net/usb/hso.c (CVE-2021-37159)

• kernel: eBPF multiplication integer overflow in prealloc_elems_and_freelist() in kernel/bpf/stackmap.c leads to out-of-bounds write (CVE-2021-41864)

• kernel: Heap buffer overflow in firedtv driver (CVE-2021-42739)

• kernel: ppc: kvm: allows a malicious KVM guest to crash the host (CVE-2021-43056)

• kernel: an array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (CVE-2021-43389)

• kernel: mwifiex_usb_recv() in drivers/net/wireless/marvell/mwifiex/usb.c allows an attacker to cause DoS via crafted USB device (CVE-2021-43976)

• kernel: use-after-free in the TEE subsystem (CVE-2021-44733)

• kernel: information leak in the IPv6 implementation (CVE-2021-45485)

• kernel: information leak in the IPv4 implementation (CVE-2021-45486)

• hw: cpu: intel: Branch History Injection (BHI) (CVE-2022-0001)

• hw: cpu: intel: Intra-Mode BTI (CVE-2022-0002)

• kernel: Local denial of service in bond_ipsec_add_sa (CVE-2022-0286)

• kernel: DoS in sctp_addto_chunk in net/sctp/sm_make_chunk.c (CVE-2022-0322)

• kernel: FUSE allows UAF reads of write() buffers, allowing theft of (partial) /etc/shadow hashes (CVE-2022-1011)

• kernel: use-after-free in nouveau kernel module (CVE-2020-27820)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.6 Release Notes linked from the References section.

A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)

• kernel: avoid cyclic entity chains due to malformed USB descriptors (CVE-2020-0404)

• kernel: speculation on incompletely validated data on IBM Power9 (CVE-2020-4788)

• kernel: integer overflow in k_ascii() in drivers/tty/vt/keyboard.c (CVE-2020-13974)

• kernel: out-of-bounds read in bpf_skb_change_head() of filter.c due to a use-after-free (CVE-2021-0941)

• kernel: joydev: zero size passed to joydev_handle_JSIOCSBTNMAP() (CVE-2021-3612)

• kernel: reading /proc/sysvipc/shm does not scale with large shared memory segment counts (CVE-2021-3669)

• kernel: out-of-bound Read in qrtr_endpoint_post in net/qrtr/qrtr.c (CVE-2021-3743)

• kernel: crypto: ccp - fix resource leaks in ccp_run_aes_gcm_cmd() (CVE-2021-3744)

• kernel: possible use-after-free in bluetooth module (CVE-2021-3752)

• kernel: unaccounted ipc objects in Linux kernel lead to breaking memcg limits and DoS attacks (CVE-2021-3759)

• kernel: DoS in ccp_run_aes_gcm_cmd() function (CVE-2021-3764)

• kernel: sctp: Invalid chunks may be used to remotely remove existing associations (CVE-2021-3772)

• kernel: lack of port sanity checking in natd and netfilter leads to exploit of OpenVPN clients (CVE-2021-3773)

• kernel: possible leak or coruption of data residing on hugetlbfs (CVE-2021-4002)

• kernel: security regression for CVE-2018-13405 (CVE-2021-4037)

• kernel: Buffer overwrite in decode_nfs_fh function (CVE-2021-4157)

• kernel: cgroup: Use open-time creds and namespace for migration perm checks (CVE-2021-4197)

• kernel: Race condition in races in sk_peer_pid and sk_peer_cred accesses (CVE-2021-4203)

• kernel: new DNS Cache Poisoning Attack based on ICMP fragment needed packets replies (CVE-2021-20322)

• kernel: arm: SIGPAGE information disclosure vulnerability (CVE-2021-21781)

• hw: cpu: LFENCE/JMP Mitigation Update for CVE-2017-5715 (CVE-2021-26401)

• kernel: Local privilege escalation due to incorrect BPF JIT branch displacement computation (CVE-2021-29154)

• kernel: use-after-free in hso_free_net_device() in drivers/net/usb/hso.c (CVE-2021-37159)

• kernel: eBPF multiplication integer overflow in prealloc_elems_and_freelist() in kernel/bpf/stackmap.c leads to out-of-bounds write (CVE-2021-41864)

• kernel: Heap buffer overflow in firedtv driver (CVE-2021-42739)

• kernel: ppc: kvm: allows a malicious KVM guest to crash the host (CVE-2021-43056)

• kernel: an array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (CVE-2021-43389)

• kernel: mwifiex_usb_recv() in drivers/net/wireless/marvell/mwifiex/usb.c allows an attacker to cause DoS via crafted USB device (CVE-2021-43976)

• kernel: use-after-free in the TEE subsystem (CVE-2021-44733)

• kernel: information leak in the IPv6 implementation (CVE-2021-45485)

• kernel: information leak in the IPv4 implementation (CVE-2021-45486)

• hw: cpu: intel: Branch History Injection (BHI) (CVE-2022-0001)

• hw: cpu: intel: Intra-Mode BTI (CVE-2022-0002)

• kernel: Local denial of service in bond_ipsec_add_sa (CVE-2022-0286)

• kernel: DoS in sctp_addto_chunk in net/sctp/sm_make_chunk.c (CVE-2022-0322)

• kernel: FUSE allows UAF reads of write() buffers, allowing theft of (partial) /etc/shadow hashes (CVE-2022-1011)

• kernel: use-after-free in nouveau kernel module (CVE-2020-27820)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

• CVE-url: https://ubuntu.com/security/CVE-2024-42265
  • protect the fetch of ->fd[fd] in do_dup2() from mispredictions
• CVE-url: https://ubuntu.com/security/CVE-2024-47669
  • nilfs2: fix state management in error path of log writing function
• CVE-url: https://ubuntu.com/security/CVE-2023-52918
  • media: pci: cx23885: check cx23885_vdev_init() return
• CVE-url: https://ubuntu.com/security/CVE-2024-46750
  • PCI: Add missing bridge lock to pci_bus_lock()
• CVE-url: https://ubuntu.com/security/CVE-2024-46676
  • nfc: pn533: Add poll mod list filling check
• CVE-url: https://ubuntu.com/security/CVE-2024-46755
  • wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()
• CVE-url: https://ubuntu.com/security/CVE-2024-46721
  • apparmor: fix possible NULL pointer dereference
• CVE-url: https://ubuntu.com/security/CVE-2024-44947
  • fuse: Initialize beyond-EOF page contents before setting uptodate
• CVE-url: https://ubuntu.com/security/CVE-2024-46675
  • usb: dwc3: core: Prevent USB core invalid event buffer address access
• CVE-url: https://ubuntu.com/security/CVE-2024-43893
  • serial: core: check uartclk for zero to avoid divide by zero
• CVE-url: https://ubuntu.com/security/CVE-2024-45021
  • memcg_write_event_control(): fix a user-triggerable oops
• CVE-url: https://ubuntu.com/security/CVE-2024-41012
  • filelock: Remove locks reliably when fcntl/close race is detected
• CVE-url: https://ubuntu.com/security/CVE-2024-42310
  • drm/gma500: fix null pointer dereference in cdv_intel_lvds_get_modes
• CVE-url: https://ubuntu.com/security/CVE-2024-42311
  • hfs: fix to initialize fields of hfs_inode_info after hfs_alloc_inode()
• CVE-url: https://ubuntu.com/security/CVE-2024-45028
  • mmc: mmc_test: Fix NULL dereference on allocation failure
• CVE-url: https://ubuntu.com/security/CVE-2024-43914
  • md/raid5: avoid BUG_ON() while continue reshape after reassembling
• CVE-url: https://ubuntu.com/security/CVE-2024-43856
  • dma: fix call order in dmam_free_coherent
• CVE-url: https://ubuntu.com/security/CVE-2024-43884
  • Bluetooth: MGMT: Add error handling to pair_device()
• CVE-url: https://ubuntu.com/security/CVE-2024-42309
  • drm/gma500: fix null pointer dereference in psb_intel_lvds_get_modes
• CVE-url: https://ubuntu.com/security/CVE-2024-50044
  • Bluetooth: RFCOMM: FIX possible deadlock in rfcomm_sk_state_change
• CVE-url: https://ubuntu.com/security/CVE-2024-49967
  • ext4: no need to continue when the number of entries is 1
• Bionic update: upstream stable patchset 2023-01-20 (LP: #2003596) // CVE- url: https://ubuntu.com/security/CVE-2022-49015
  • net: hsr: Fix potential use-after-free
• CVE-url: https://ubuntu.com/security/CVE-2024-50033
  • slip: make slhc_remember() more robust against malicious packets
• CVE-url: https://ubuntu.com/security/CVE-2024-47670
  • ocfs2: add bounds checking to ocfs2_xattr_find_entry()
• CVE-url: https://ubuntu.com/security/CVE-2024-49950
  • Bluetooth: L2CAP: Fix uaf in l2cap_connect
• CVE-url: https://ubuntu.com/security/CVE-2024-49883
  • ext4: aovid use-after-free in ext4_ext_insert_extent()
• Bionic update: upstream stable patchset 2023-01-20 (LP: #2003596) // CVE- url: https://ubuntu.com/security/CVE-2022-48960
  • net: hisilicon: Fix potential use-after-free in hix5hd2_rx()
• CVE-url: https://ubuntu.com/security/CVE-2024-47745
  • mm: call the security_mmap_file() LSM hook in remap_file_pages()
• CVE-url: https://ubuntu.com/security/CVE-2024-49860
  • ACPI: sysfs: validate return type of _STR method
• CVE-url: https://ubuntu.com/security/CVE-2024-49882
  • ext4: fix double brelse() the buffer of the extents path
• CVE-url: https://ubuntu.com/security/CVE-2024-49995
  • tipc: guard against string buffer overrun
• CVE-url: https://ubuntu.com/security/CVE-2024-47723 -…

• CVE-url: https://ubuntu.com/security/CVE-2024-42265
  • protect the fetch of ->fd[fd] in do_dup2() from mispredictions
• CVE-url: https://ubuntu.com/security/CVE-2024-47669
  • nilfs2: fix state management in error path of log writing function
• CVE-url: https://ubuntu.com/security/CVE-2023-52918
  • media: pci: cx23885: check cx23885_vdev_init() return
• CVE-url: https://ubuntu.com/security/CVE-2024-46750
  • PCI: Add missing bridge lock to pci_bus_lock()
• CVE-url: https://ubuntu.com/security/CVE-2024-46676
  • nfc: pn533: Add poll mod list filling check
• CVE-url: https://ubuntu.com/security/CVE-2024-46755
  • wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()
• CVE-url: https://ubuntu.com/security/CVE-2024-46721
  • apparmor: fix possible NULL pointer dereference
• CVE-url: https://ubuntu.com/security/CVE-2024-44947
  • fuse: Initialize beyond-EOF page contents before setting uptodate
• CVE-url: https://ubuntu.com/security/CVE-2024-46675
  • usb: dwc3: core: Prevent USB core invalid event buffer address access
• CVE-url: https://ubuntu.com/security/CVE-2024-43893
  • serial: core: check uartclk for zero to avoid divide by zero
• CVE-url: https://ubuntu.com/security/CVE-2024-45021
  • memcg_write_event_control(): fix a user-triggerable oops
• CVE-url: https://ubuntu.com/security/CVE-2024-41012
  • filelock: Remove locks reliably when fcntl/close race is detected
• CVE-url: https://ubuntu.com/security/CVE-2024-42310
  • drm/gma500: fix null pointer dereference in cdv_intel_lvds_get_modes
• CVE-url: https://ubuntu.com/security/CVE-2024-42311
  • hfs: fix to initialize fields of hfs_inode_info after hfs_alloc_inode()
• CVE-url: https://ubuntu.com/security/CVE-2024-45028
  • mmc: mmc_test: Fix NULL dereference on allocation failure
• CVE-url: https://ubuntu.com/security/CVE-2024-43914
  • md/raid5: avoid BUG_ON() while continue reshape after reassembling
• CVE-url: https://ubuntu.com/security/CVE-2024-43856
  • dma: fix call order in dmam_free_coherent
• CVE-url: https://ubuntu.com/security/CVE-2024-43884
  • Bluetooth: MGMT: Add error handling to pair_device()
• CVE-url: https://ubuntu.com/security/CVE-2024-42309
  • drm/gma500: fix null pointer dereference in psb_intel_lvds_get_modes
• CVE-url: https://ubuntu.com/security/CVE-2024-50044
  • Bluetooth: RFCOMM: FIX possible deadlock in rfcomm_sk_state_change
• CVE-url: https://ubuntu.com/security/CVE-2024-49967
  • ext4: no need to continue when the number of entries is 1
• Bionic update: upstream stable patchset 2023-01-20 (LP: #2003596) // CVE- url: https://ubuntu.com/security/CVE-2022-49015
  • net: hsr: Fix potential use-after-free
• CVE-url: https://ubuntu.com/security/CVE-2024-50033
  • slip: make slhc_remember() more robust against malicious packets
• CVE-url: https://ubuntu.com/security/CVE-2024-47670
  • ocfs2: add bounds checking to ocfs2_xattr_find_entry()
• CVE-url: https://ubuntu.com/security/CVE-2024-49950
  • Bluetooth: L2CAP: Fix uaf in l2cap_connect
• CVE-url: https://ubuntu.com/security/CVE-2024-49883
  • ext4: aovid use-after-free in ext4_ext_insert_extent()
• Bionic update: upstream stable patchset 2023-01-20 (LP: #2003596) // CVE- url: https://ubuntu.com/security/CVE-2022-48960
  • net: hisilicon: Fix potential use-after-free in hix5hd2_rx()
• CVE-url: https://ubuntu.com/security/CVE-2024-47745
  • mm: call the security_mmap_file() LSM hook in remap_file_pages()
• CVE-url: https://ubuntu.com/security/CVE-2024-49860
  • ACPI: sysfs: validate return type of _STR method
• CVE-url: https://ubuntu.com/security/CVE-2024-49882
  • ext4: fix double brelse() the buffer of the extents path
• CVE-url: https://ubuntu.com/security/CVE-2024-49995
  • tipc: guard against string buffer overrun
• CVE-url: https://ubuntu.com/security/CVE-2024-47723 -…

The openSUSE Leap 15.2 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).
• CVE-2021-3743: Fixed OOB Read in qrtr_endpoint_post (bsc#1189883).
• CVE-2021-3739: Fixed a NULL pointer dereference when deleting device by invalid id (bsc#1189832 ).
• CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400).
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2021-38207: drivers/net/ethernet/xilinx/ll_temac_main.c allowed remote attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes (bnc#1189298).
• CVE-2021-38205: drivers/net/ethernet/xilinx/xilinx_emaclite.c made it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer) (bnc#1189292).
• CVE-2021-38204: drivers/usb/host/max3421-hcd.c allowed physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations (bnc#1189291).
• CVE-2021-3640: A Use-After-Free vulnerability in function sco_sock_sendmsg() was fixed (bnc#1188172).
• CVE-2021-34556: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack (bnc#1188983).
• CVE-2021-35477: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation did not necessarily occur before a store operation that has an attacker-controlled value (bnc#1188985).

The following non-security bugs were fixed:

• ACPI: NFIT: Fix support for virtual SPA ranges (git-fixes).
• ACPI: processor: Clean up acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export function to claim _CST control (bsc#1175543)
• ACPI: processor: Introduce acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Make ACPI_PROCESSOR_CSTATE depend on ACPI_PROCESSOR (bsc#1175543)
• Add alt-commit for a BT fix patch (git-fixes)
• ALSA: hda: Add quirk for ASUS Flow x13 (git-fixes).
• ALSA: hda - fix the 'Capture Switch' value change notifications (git-fixes).
• ALSA: hda/realtek: Enable 4-speaker output for Dell XPS 15 9510 laptop (git-fixes).
• ALSA: hda/realtek: Workaround for conflicting SSID on ASUS ROG Strix G17 (git-fixes).
• ALSA: hda/via: Apply runtime PM workaround for ASUS B23E (git-fixes).
• ALSA: pcm: fix divide error in snd_pcm_lib_ioctl (git-fixes).
• ALSA: usb-audio: Add registration quirk for JBL Quantum 800 (git-fixes).
• ALSA: usb-audio: fix incorrect clock source setting (git-fixes).
• ALSA: usb-audio: Fix regression on Sony WALKMAN NW-A45 DAC (git-fixes).
• ASoC: cs42l42: Correct definition of ADC Volume…

The SUSE Linux Enterprise 15 SP3 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400).
• CVE-2021-3679: A lack of CPU resource in tracing module functionality was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service (bnc#1189057).
• CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706).
• CVE-2021-3739: Fixed a NULL pointer dereference when deleting device by invalid id (bsc#1189832 ).
• CVE-2021-3743: Fixed OOB Read in qrtr_endpoint_post (bsc#1189883).
• CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2021-38204: drivers/usb/host/max3421-hcd.c allowed physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations (bnc#1189291).
• CVE-2021-38205: drivers/net/ethernet/xilinx/xilinx_emaclite.c made it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer) (bnc#1189292).
• CVE-2021-38207: drivers/net/ethernet/xilinx/ll_temac_main.c allowed remote attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes (bnc#1189298).
• CVE-2021-38166: Fixed an integer overflow and out-of-bounds write when many elements are placed in a single bucket in kernel/bpf/hashtab.c (bnc#1189233 ).
• CVE-2021-38209: Fixed allowed observation of changes in any net namespace via net/netfilter/nf_conntrack_standalone.c (bnc#1189393).
• CVE-2021-38206: Fixed NULL pointer dereference in the radiotap parser inside the mac80211 subsystem (bnc#1189296).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).
• CVE-2020-12770: Fixed sg_remove_request call in a certain failure cases (bsc#1171420).

The following non-security bugs were fixed:

• ACPI: NFIT: Fix support for virtual SPA ranges (git-fixes).
• ACPI: processor: Clean up acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export function to claim _CST control (bsc#1175543)
• ACPI: processor: Introduce acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Make ACPI_PROCESSOR_CSTATE depend on ACPI_PROCESSOR (bsc#1175543)
• ALSA: hda - fix the 'Capture Switch' value change notifications (git-fixes).
• ALSA: hda/hdmi: Add quirk to force pin connectivity on NUC10 (git-fixes).
• ALSA: hda/hdmi: fix max DP-MST dev_num for Intel TGL+ platforms (git-fixes).
• ALSA: hda/hdmi: let new platforms assign the pcm slot dynamically (git-fixes). -…

The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400).
• CVE-2021-3679: A lack of CPU resource in tracing module functionality was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service (bnc#1189057).
• CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706).
• CVE-2021-3739: Fixed a NULL pointer dereference when deleting device by invalid id (bsc#1189832 ).
• CVE-2021-3743: Fixed OOB Read in qrtr_endpoint_post (bsc#1189883).
• CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2021-38204: drivers/usb/host/max3421-hcd.c allowed physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations (bnc#1189291).
• CVE-2021-38205: drivers/net/ethernet/xilinx/xilinx_emaclite.c made it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer) (bnc#1189292).
• CVE-2021-38207: drivers/net/ethernet/xilinx/ll_temac_main.c allowed remote attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes (bnc#1189298).
• CVE-2021-38166: Fixed an integer overflow and out-of-bounds write when many elements are placed in a single bucket in kernel/bpf/hashtab.c (bnc#1189233 ).
• CVE-2021-38209: Fixed allowed observation of changes in any net namespace via net/netfilter/nf_conntrack_standalone.c (bnc#1189393).
• CVE-2021-38206: Fixed NULL pointer dereference in the radiotap parser inside the mac80211 subsystem (bnc#1189296).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).
• CVE-2020-12770: Fixed sg_remove_request call in a certain failure cases (bsc#1171420).

The following non-security bugs were fixed:

• ACPI: NFIT: Fix support for virtual SPA ranges (git-fixes).
• ACPI: processor: Clean up acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export function to claim _CST control (bsc#1175543)
• ACPI: processor: Introduce acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Make ACPI_PROCESSOR_CSTATE depend on ACPI_PROCESSOR (bsc#1175543)
• ALSA: hda - fix the 'Capture Switch' value change notifications (git-fixes).
• ALSA: hda/hdmi: Add quirk to force pin connectivity on NUC10 (git-fixes).
• ALSA: hda/hdmi: fix max DP-MST dev_num for Intel TGL+ platforms (git-fixes).
• ALSA: hda/hdmi: let new platforms assign the pcm slot dynamically (git-fixes).
• ALSA:…

The SUSE Linux Enterprise 15 SP3 kernel was updated.

The following security bugs were fixed:

• CVE-2020-3702: Fixed a bug which could be triggered with specifically timed and handcrafted traffic and cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure. (bnc#1191193)
• CVE-2021-3752: Fixed a use after free vulnerability in the Linux kernel's bluetooth module. (bsc#1190023)
• CVE-2021-40490: Fixed a race condition discovered in the ext4 subsystem that could leat to local priviledge escalation. (bnc#1190159)
• CVE-2021-3744: Fixed a bug which could allows attackers to cause a denial of service. (bsc#1189884)
• CVE-2021-3764: Fixed a bug which could allows attackers to cause a denial of service. (bsc#1190534)
• CVE-2021-3669: Fixed a bug that doesn't allow /proc/sysvipc/shm to scale with large shared memory segment counts which could lead to resource exhaustion and DoS. (bsc#1188986)
• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).

The following non-security bugs were fixed:

• ALSA: firewire-motu: fix truncated bytes in message tracepoints (git-fixes).
• apparmor: remove duplicate macro list_entry_is_head() (git-fixes).
• ASoC: fsl_micfil: register platform component before registering cpu dai (git-fixes).
• ASoC: Intel: Fix platform ID matching (git-fixes).
• ASoC: mediatek: common: handle NULL case in suspend/resume function (git-fixes).
• ASoC: rockchip: i2s: Fix regmap_ops hang (git-fixes).
• ASoC: rockchip: i2s: Fixup config for DAIFMT_DSP_A/B (git-fixes).
• ASoC: rt5682: Implement remove callback (git-fixes).
• ASoC: rt5682: Properly turn off regulators if wrong device ID (git-fixes).
• ASoC: rt5682: Remove unused variable in rt5682_i2c_remove() (git-fixes).
• ASoC: SOF: Fix DSP oops stack dump output contents (git-fixes).
• ath9k: fix OOB read ar9300_eeprom_restore_internal (git-fixes).
• ath9k: fix sleeping in atomic context (git-fixes).
• backlight: pwm_bl: Improve bootloader/kernel device handover (git-fixes).
• bareudp: Fix invalid read beyond skb's linear data (jsc#SLE-15172).
• blk-mq: do not deactivate hctx if managed irq isn't used (bsc#1185762).
• blk-mq: do not deactivate hctx if managed irq isn't used (bsc#1185762).
• blk-mq: kABI fixes for blk_mq_queue_map (bsc#1185762).
• blk-mq: kABI fixes for blk_mq_queue_map (bsc#1185762).
• blk-mq: mark if one queue map uses managed irq (bsc#1185762).
• blk-mq: mark if one queue map uses managed irq (bsc#1185762).
• Bluetooth: skip invalid hci_sync_conn_complete_evt (git-fixes).
• bnx2x: fix an error code in bnx2x_nic_load() (git-fixes).
• bnxt_en: Add missing DMA memory barriers (git-fixes).
• bnxt_en: Disable aRFS if running on 212 firmware (git-fixes).
• bnxt_en: Do not enable legacy TX push on older firmware (git-fixes).
• bnxt_en: Fix asic.rev in devlink dev info command (jsc#SLE-16649).
• bnxt_en: fix stored FW_PSID version masks (jsc#SLE-16649).
• bnxt_en: Store the running firmware version code (git-fixes).
• bnxt: count Tx drops (git-fixes).
• bnxt: disable napi before canceling DIM (git-fixes).
• bnxt: do not lock the tx queue from napi poll (git-fixes).
• bnxt: make sure xmit_more + errors does not miss doorbells (git-fixes).
• bpf, samples: Add missing mprog-disable to xdp_redirect_cpu's optstring (git-fixes).
• bpf: Fix ringbuf helper function compatibility (git-fixes).
• bpftool: Add sock_release help info for cgroup attach/prog load command (bsc#1177028).
• btrfs: prevent rename2 from exchanging a subvol with a directory from different parents (bsc#1190626).
• clk: at91: clk-generated: Limit the requested rate to our range (git-fixes).
• clk: at91: clk-generated: pass the id of changeable parent at registration (git-fixes).
• console: consume APC, DM, DCS (git-fixes).
• cpuidle: pseries: Do not cap the CEDE0 latency in fixup_cede0_latency() (bsc#1185550 ltc#192610 git-fixes…

The SUSE Linux Enterprise 15 SP1 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

• CVE-2021-3655: Missing size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory (bnc#1188563).

• CVE-2021-33033: The Linux kernel has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value (bnc#1186109 bnc#1186390 bnc#1188876).

• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).

• CVE-2021-42739: The firewire subsystem in the Linux kernel has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bnc#1184673).

• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).

• CVE-2018-13405: The inode_init_owner function in fs/inode.c in the Linux kernel allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1100416 bnc#1129735).

• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).

• CVE-2021-34556: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack (bnc#1188983).

• CVE-2021-35477: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation did not necessarily occur before a store operation that has an attacker-controlled value (bnc#1188985).

• CVE-2021-42252: An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel Local attackers able to access the Aspeed LPC control interface could overwrite memory in…

These are all security issues fixed in the kernel-devel-5.14.6-1.4 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the kernel-devel-longterm-6.6.17-1.1 package on the GA media of openSUSE Tumbleweed.

The SUSE Linux Enterprise 15 SP2 Realtime kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).
• CVE-2021-3743: Fixed OOB Read in qrtr_endpoint_post (bsc#1189883).
• CVE-2021-3739: Fixed a NULL pointer dereference when deleting device by invalid id (bsc#1189832 ).
• CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400).
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2021-38207: drivers/net/ethernet/xilinx/ll_temac_main.c allowed remote attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes (bnc#1189298).
• CVE-2021-38205: drivers/net/ethernet/xilinx/xilinx_emaclite.c made it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer) (bnc#1189292).
• CVE-2021-38204: drivers/usb/host/max3421-hcd.c allowed physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations (bnc#1189291).
• CVE-2021-3679: A lack of CPU resource in tracing module functionality was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service (bnc#1189057).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).

The following non-security bugs were fixed:

• ACPI: NFIT: Fix support for virtual SPA ranges (git-fixes).
• ACPI: processor: Clean up acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export function to claim _CST control (bsc#1175543)
• ACPI: processor: Introduce acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Make ACPI_PROCESSOR_CSTATE depend on ACPI_PROCESSOR (bsc#1175543)
• ALSA: hda - fix the 'Capture Switch' value change notifications (git-fixes).
• ALSA: hda/realtek: Enable 4-speaker output for Dell XPS 15 9510 laptop (git-fixes).
• ALSA: hda/realtek: Fix headset mic for Acer SWIFT SF314-56 (ALC256) (git-fixes).
• ALSA: hda/realtek: add mic quirk for Acer SF314-42 (git-fixes).
• ALSA: hda/via: Apply runtime PM workaround for ASUS B23E (git-fixes).
• ALSA: hda: Add quirk for ASUS Flow x13 (git-fixes).
• ALSA: pcm: fix divide error in snd_pcm_lib_ioctl (git-fixes).
• ALSA: seq: Fix racy deletion of subscriber (git-fixes).
• ALSA: usb-audio: Add registration quirk for JBL Quantum 600 (git-fixes).
• ALSA: usb-audio: Fix regression on Sony WALKMAN NW-A45 DAC (git-fixes).
• ALSA: usb-audio: Fix superfluous autosuspend recovery (git-fixes).
• ALSA: usb-audio: fix incorrect…

The SUSE Linux Enterprise 15 SP2 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).
• CVE-2021-3743: Fixed OOB Read in qrtr_endpoint_post (bsc#1189883).
• CVE-2021-3739: Fixed a NULL pointer dereference when deleting device by invalid id (bsc#1189832).
• CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400).
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2021-38207: drivers/net/ethernet/xilinx/ll_temac_main.c allowed remote attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes (bnc#1189298).
• CVE-2021-38205: drivers/net/ethernet/xilinx/xilinx_emaclite.c made it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer) (bnc#1189292).
• CVE-2021-38204: drivers/usb/host/max3421-hcd.c allowed physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations (bnc#1189291).
• CVE-2021-3679: A lack of CPU resource in tracing module functionality was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service (bnc#1189057).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).

The following non-security bugs were fixed:

• ACPI: NFIT: Fix support for virtual SPA ranges (git-fixes).
• ACPI: processor: Clean up acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export function to claim _CST control (bsc#1175543)
• ACPI: processor: Introduce acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Make ACPI_PROCESSOR_CSTATE depend on ACPI_PROCESSOR (bsc#1175543)
• ALSA: hda - fix the 'Capture Switch' value change notifications (git-fixes).
• ALSA: hda/realtek: Enable 4-speaker output for Dell XPS 15 9510 laptop (git-fixes).
• ALSA: hda/realtek: Fix headset mic for Acer SWIFT SF314-56 (ALC256) (git-fixes).
• ALSA: hda/realtek: add mic quirk for Acer SF314-42 (git-fixes).
• ALSA: hda/via: Apply runtime PM workaround for ASUS B23E (git-fixes).
• ALSA: hda: Add quirk for ASUS Flow x13 (git-fixes).
• ALSA: pcm: fix divide error in snd_pcm_lib_ioctl (git-fixes).
• ALSA: seq: Fix racy deletion of subscriber (git-fixes).
• ALSA: usb-audio: Add registration quirk for JBL Quantum 600 (git-fixes).
• ALSA: usb-audio: Fix regression on Sony WALKMAN NW-A45 DAC (git-fixes).
• ALSA: usb-audio: Fix superfluous autosuspend recovery (git-fixes).
• ALSA: usb-audio: fix incorrect…

The SUSE Linux Enterprise 15 SP3 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400).
• CVE-2021-3679: A lack of CPU resource in tracing module functionality was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service (bnc#1189057).
• CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706).
• CVE-2021-3739: Fixed a NULL pointer dereference when deleting device by invalid id (bsc#1189832 ).
• CVE-2021-3743: Fixed OOB Read in qrtr_endpoint_post (bsc#1189883).
• CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2021-38204: drivers/usb/host/max3421-hcd.c allowed physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations (bnc#1189291).
• CVE-2021-38205: drivers/net/ethernet/xilinx/xilinx_emaclite.c made it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer) (bnc#1189292).
• CVE-2021-38207: drivers/net/ethernet/xilinx/ll_temac_main.c allowed remote attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes (bnc#1189298).
• CVE-2021-38166: Fixed an integer overflow and out-of-bounds write when many elements are placed in a single bucket in kernel/bpf/hashtab.c (bnc#1189233 ).
• CVE-2021-38209: Fixed allowed observation of changes in any net namespace via net/netfilter/nf_conntrack_standalone.c (bnc#1189393).
• CVE-2021-38206: Fixed NULL pointer dereference in the radiotap parser inside the mac80211 subsystem (bnc#1189296).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).
• CVE-2020-12770: Fixed sg_remove_request call in a certain failure cases (bsc#1171420).

The following non-security bugs were fixed:

• ACPI: NFIT: Fix support for virtual SPA ranges (git-fixes).
• ACPI: processor: Clean up acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export function to claim _CST control (bsc#1175543)
• ACPI: processor: Introduce acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Make ACPI_PROCESSOR_CSTATE depend on ACPI_PROCESSOR (bsc#1175543)
• ALSA: hda - fix the 'Capture Switch' value change notifications (git-fixes).
• ALSA: hda/hdmi: Add quirk to force pin connectivity on NUC10 (git-fixes).
• ALSA: hda/hdmi: fix max DP-MST dev_num for Intel TGL+ platforms (git-fixes).
• ALSA: hda/hdmi: let new platforms assign the pcm slot dynamically (git-fixes). -…

The SUSE Linux Enterprise 12 SP5 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2018-9517: Fixed possible memory corruption due to a use after free in pppol2tp_connect (bsc#1108488).
• CVE-2019-3874: Fixed possible denial of service attack via SCTP socket buffer used by a userspace applications (bnc#1129898).
• CVE-2019-3900: Fixed an infinite loop issue while handling incoming packets in handle_rx() (bnc#1133374).
• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400).
• CVE-2021-3679: A lack of CPU resource in tracing module functionality was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service (bnc#1189057).
• CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706).
• CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).
• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2021-38204: drivers/usb/host/max3421-hcd.c allowed physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations (bnc#1189291).

The following non-security bugs were fixed:

• ACPI: NFIT: Fix support for virtual SPA ranges (git-fixes).
• ALSA: seq: Fix racy deletion of subscriber (git-fixes).
• ASoC: cs42l42: Do not allow SND_SOC_DAIFMT_LEFT_J (git-fixes).
• ASoC: cs42l42: Fix inversion of ADC Notch Switch control (git-fixes).
• ASoC: cs42l42: Remove duplicate control for WNF filter frequency (git-fixes).
• Bluetooth: Move shutdown callback before flushing tx and rx queue (git-fixes).
• Bluetooth: add timeout sanity check to hci_inquiry (git-fixes).
• Bluetooth: fix repeated calls to sco_sock_kill (git-fixes).
• Bluetooth: increase BTNAMSIZ to 21 chars to fix potential buffer overflow (git-fixes).
• Bluetooth: sco: prevent information leak in sco_conn_defer_accept() (git-fixes).
• KVM: SVM: Call SEV Guest Decommission if ASID binding fails (12sp5).
• Move upstreamed BT fixes into sorted section
• NFSv4/pNFS: Do not call _nfs4_pnfs_v3_ds_connect multiple times (git-fixes).
• NFSv4: Initialise connection to the server in nfs4_alloc_client() (bsc#1040364).
• PCI/MSI: Correct misleading comments (git-fixes).
• PCI/MSI: Do not set invalid bits in MSI mask (git-fixes).
• PCI/MSI: Enable and mask MSI-X early (git-fixes).
• PCI/MSI: Use msi_mask_irq() in pci_msi_shutdown() (git-fixes).
• PCI: Add Intel VMD devices to pci ids (bsc#1183983).
• PCI: PM: Enable PME if it can be signaled from D3cold (git-fixes).
• PCI: hv: Use expected affinity when unmasking IRQ (bsc#1185973).
• PCI: vmd: Add an additional VMD device id to driver device id table (bsc#1183983).
• PCI: vmd: Add offset to bus numbers if necessary (bsc#1183983).
• PCI: vmd: Assign membar addresses from shadow registers (bsc#1183983).
• PCI: vmd: Filter resource type bits from shadow register (bsc#1183983).
• PCI: vmd: Fix config addressing when using bus offsets (bsc#1183983).
• PCI: vmd: Fix shadow offsets to…

The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400).
• CVE-2021-3679: A lack of CPU resource in tracing module functionality was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service (bnc#1189057).
• CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706).
• CVE-2021-3739: Fixed a NULL pointer dereference when deleting device by invalid id (bsc#1189832 ).
• CVE-2021-3743: Fixed OOB Read in qrtr_endpoint_post (bsc#1189883).
• CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2021-38204: drivers/usb/host/max3421-hcd.c allowed physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations (bnc#1189291).
• CVE-2021-38205: drivers/net/ethernet/xilinx/xilinx_emaclite.c made it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer) (bnc#1189292).
• CVE-2021-38207: drivers/net/ethernet/xilinx/ll_temac_main.c allowed remote attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes (bnc#1189298).
• CVE-2021-38166: Fixed an integer overflow and out-of-bounds write when many elements are placed in a single bucket in kernel/bpf/hashtab.c (bnc#1189233 ).
• CVE-2021-38209: Fixed allowed observation of changes in any net namespace via net/netfilter/nf_conntrack_standalone.c (bnc#1189393).
• CVE-2021-38206: Fixed NULL pointer dereference in the radiotap parser inside the mac80211 subsystem (bnc#1189296).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).
• CVE-2020-12770: Fixed sg_remove_request call in a certain failure cases (bsc#1171420).

The following non-security bugs were fixed:

• ACPI: NFIT: Fix support for virtual SPA ranges (git-fixes).
• ACPI: processor: Clean up acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export function to claim _CST control (bsc#1175543)
• ACPI: processor: Introduce acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Make ACPI_PROCESSOR_CSTATE depend on ACPI_PROCESSOR (bsc#1175543)
• ALSA: hda - fix the 'Capture Switch' value change notifications (git-fixes).
• ALSA: hda/hdmi: Add quirk to force pin connectivity on NUC10 (git-fixes).
• ALSA: hda/hdmi: fix max DP-MST dev_num for Intel TGL+ platforms (git-fixes).
• ALSA: hda/hdmi: let new platforms assign the pcm slot dynamically (git-fixes).
• ALSA:…

The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400).
• CVE-2021-3679: A lack of CPU resource in tracing module functionality was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service (bnc#1189057).
• CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706).
• CVE-2021-3739: Fixed a NULL pointer dereference when deleting device by invalid id (bsc#1189832 ).
• CVE-2021-3743: Fixed OOB Read in qrtr_endpoint_post (bsc#1189883).
• CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2021-38204: drivers/usb/host/max3421-hcd.c allowed physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations (bnc#1189291).
• CVE-2021-38205: drivers/net/ethernet/xilinx/xilinx_emaclite.c made it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer) (bnc#1189292).
• CVE-2021-38207: drivers/net/ethernet/xilinx/ll_temac_main.c allowed remote attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes (bnc#1189298).
• CVE-2021-38166: Fixed an integer overflow and out-of-bounds write when many elements are placed in a single bucket in kernel/bpf/hashtab.c (bnc#1189233 ).
• CVE-2021-38209: Fixed allowed observation of changes in any net namespace via net/netfilter/nf_conntrack_standalone.c (bnc#1189393).
• CVE-2021-38206: Fixed NULL pointer dereference in the radiotap parser inside the mac80211 subsystem (bnc#1189296).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).
• CVE-2020-12770: Fixed sg_remove_request call in a certain failure cases (bsc#1171420).

The following non-security bugs were fixed:

• ACPI: NFIT: Fix support for virtual SPA ranges (git-fixes).
• ACPI: processor: Clean up acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export function to claim _CST control (bsc#1175543)
• ACPI: processor: Introduce acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Make ACPI_PROCESSOR_CSTATE depend on ACPI_PROCESSOR (bsc#1175543)
• ALSA: hda - fix the 'Capture Switch' value change notifications (git-fixes).
• ALSA: hda/hdmi: Add quirk to force pin connectivity on NUC10 (git-fixes).
• ALSA: hda/hdmi: fix max DP-MST dev_num for Intel TGL+ platforms (git-fixes).
• ALSA: hda/hdmi: let new platforms assign the pcm slot dynamically (git-fixes).
• ALSA:…

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2018-9517: Fixed possible memory corruption due to a use after free in pppol2tp_connect (bsc#1108488).
• CVE-2019-3874: Fixed possible denial of service attack via SCTP socket buffer used by a userspace applications (bnc#1129898).
• CVE-2019-3900: Fixed an infinite loop issue while handling incoming packets in handle_rx() (bnc#1133374).
• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400).
• CVE-2021-3679: A lack of CPU resource in tracing module functionality was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service (bnc#1189057).
• CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706).
• CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).
• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2021-38204: drivers/usb/host/max3421-hcd.c allowed physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations (bnc#1189291).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2020-12770: Fixed sg_remove_request call in a certain failure cases (bsc#1171420).

The following non-security bugs were fixed:

• ACPI: NFIT: Fix support for virtual SPA ranges (git-fixes).
• ALSA: seq: Fix racy deletion of subscriber (git-fixes).
• ASoC: cs42l42: Do not allow SND_SOC_DAIFMT_LEFT_J (git-fixes).
• ASoC: cs42l42: Fix inversion of ADC Notch Switch control (git-fixes).
• ASoC: cs42l42: Remove duplicate control for WNF filter frequency (git-fixes).
• Bluetooth: Move shutdown callback before flushing tx and rx queue (git-fixes).
• Bluetooth: add timeout sanity check to hci_inquiry (git-fixes).
• Bluetooth: fix repeated calls to sco_sock_kill (git-fixes).
• Bluetooth: increase BTNAMSIZ to 21 chars to fix potential buffer overflow (git-fixes).
• Bluetooth: sco: prevent information leak in sco_conn_defer_accept() (git-fixes).
• KVM: SVM: Call SEV Guest Decommission if ASID binding fails (12sp5).
• NFSv4/pNFS: Do not call _nfs4_pnfs_v3_ds_connect multiple times (git-fixes).
• NFSv4: Initialise connection to the server in nfs4_alloc_client() (bsc#1040364).
• PCI/MSI: Correct misleading comments (git-fixes).
• PCI/MSI: Do not set invalid bits in MSI mask (git-fixes).
• PCI/MSI: Enable and mask MSI-X early (git-fixes).
• PCI/MSI: Use msi_mask_irq() in pci_msi_shutdown() (git-fixes).
• PCI: Add Intel VMD devices to pci ids (bsc#1183983).
• PCI: PM: Enable PME if it can be signaled from D3cold (git-fixes).
• PCI: hv: Use expected affinity when unmasking IRQ (bsc#1185973).
• PCI: vmd: Add an additional VMD device id to…

The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).
• CVE-2021-3743: Fixed OOB Read in qrtr_endpoint_post (bsc#1189883).
• CVE-2021-3739: Fixed a NULL pointer dereference when deleting device by invalid id (bsc#1189832 ).
• CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400).
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2021-38207: drivers/net/ethernet/xilinx/ll_temac_main.c allowed remote attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes (bnc#1189298).
• CVE-2021-38205: drivers/net/ethernet/xilinx/xilinx_emaclite.c made it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer) (bnc#1189292).
• CVE-2021-38204: drivers/usb/host/max3421-hcd.c allowed physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations (bnc#1189291).
• CVE-2021-3679: A lack of CPU resource in tracing module functionality was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service (bnc#1189057).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).

The following non-security bugs were fixed:

• ACPI: NFIT: Fix support for virtual SPA ranges (git-fixes).
• ACPI: processor: Clean up acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export function to claim _CST control (bsc#1175543)
• ACPI: processor: Introduce acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Make ACPI_PROCESSOR_CSTATE depend on ACPI_PROCESSOR (bsc#1175543)
• ALSA: hda - fix the 'Capture Switch' value change notifications (git-fixes).
• ALSA: hda/realtek: Enable 4-speaker output for Dell XPS 15 9510 laptop (git-fixes).
• ALSA: hda/realtek: Fix headset mic for Acer SWIFT SF314-56 (ALC256) (git-fixes).
• ALSA: hda/realtek: add mic quirk for Acer SF314-42 (git-fixes).
• ALSA: hda/via: Apply runtime PM workaround for ASUS B23E (git-fixes).
• ALSA: hda: Add quirk for ASUS Flow x13 (git-fixes).
• ALSA: pcm: fix divide error in snd_pcm_lib_ioctl (git-fixes).
• ALSA: seq: Fix racy deletion of subscriber (git-fixes).
• ALSA: usb-audio: Add registration quirk for JBL Quantum 600 (git-fixes).
• ALSA: usb-audio: Fix regression on Sony WALKMAN NW-A45 DAC (git-fixes).
• ALSA: usb-audio: Fix superfluous autosuspend recovery (git-fixes).
• ALSA: usb-audio: fix incorrect clock…

The SUSE Linux Enterprise 12 SP5 Realtime kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2018-9517: Fixed possible memory corruption due to a use after free in pppol2tp_connect (bsc#1108488).
• CVE-2019-3874: Fixed possible denial of service attack via SCTP socket buffer used by a userspace applications (bnc#1129898).
• CVE-2019-3900: Fixed an infinite loop issue while handling incoming packets in handle_rx() (bnc#1133374).
• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400).
• CVE-2021-3679: A lack of CPU resource in tracing module functionality was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service (bnc#1189057).
• CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706).
• CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).
• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2021-38204: drivers/usb/host/max3421-hcd.c allowed physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations (bnc#1189291).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2020-12770: Fixed sg_remove_request call in a certain failure cases (bsc#1171420).

The following non-security bugs were fixed:

• ACPI: NFIT: Fix support for virtual SPA ranges (git-fixes).
• ALSA: seq: Fix racy deletion of subscriber (git-fixes).
• ASoC: cs42l42: Do not allow SND_SOC_DAIFMT_LEFT_J (git-fixes).
• ASoC: cs42l42: Fix inversion of ADC Notch Switch control (git-fixes).
• ASoC: cs42l42: Remove duplicate control for WNF filter frequency (git-fixes).
• Bluetooth: Move shutdown callback before flushing tx and rx queue (git-fixes).
• Bluetooth: add timeout sanity check to hci_inquiry (git-fixes).
• Bluetooth: fix repeated calls to sco_sock_kill (git-fixes).
• Bluetooth: increase BTNAMSIZ to 21 chars to fix potential buffer overflow (git-fixes).
• Bluetooth: sco: prevent information leak in sco_conn_defer_accept() (git-fixes).
• KVM: SVM: Call SEV Guest Decommission if ASID binding fails (12sp5).
• NFSv4/pNFS: Do not call _nfs4_pnfs_v3_ds_connect multiple times (git-fixes).
• NFSv4: Initialise connection to the server in nfs4_alloc_client() (bsc#1040364).
• PCI/MSI: Correct misleading comments (git-fixes).
• PCI/MSI: Do not set invalid bits in MSI mask (git-fixes).
• PCI/MSI: Enable and mask MSI-X early (git-fixes).
• PCI/MSI: Use msi_mask_irq() in pci_msi_shutdown() (git-fixes).
• PCI: Add Intel VMD devices to pci ids (bsc#1183983).
• PCI: PM: Enable PME if it can be signaled from D3cold (git-fixes).
• PCI: hv: Use expected affinity when unmasking IRQ (bsc#1185973).
• PCI: vmd: Add an additional VMD…

The SUSE Linux Enterprise 15 SP3 kernel was updated.

The following security bugs were fixed:

• CVE-2020-3702: Fixed a bug which could be triggered with specifically timed and handcrafted traffic and cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure. (bnc#1191193)
• CVE-2021-3752: Fixed a use after free vulnerability in the Linux kernel's bluetooth module. (bsc#1190023)
• CVE-2021-40490: Fixed a race condition discovered in the ext4 subsystem that could leat to local priviledge escalation. (bnc#1190159)
• CVE-2021-3744: Fixed a bug which could allows attackers to cause a denial of service. (bsc#1189884)
• CVE-2021-3764: Fixed a bug which could allows attackers to cause a denial of service. (bsc#1190534)
• CVE-2021-3669: Fixed a bug that doesn't allow /proc/sysvipc/shm to scale with large shared memory segment counts which could lead to resource exhaustion and DoS. (bsc#1188986)
• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).

The following non-security bugs were fixed:

• ALSA: firewire-motu: fix truncated bytes in message tracepoints (git-fixes).
• apparmor: remove duplicate macro list_entry_is_head() (git-fixes).
• ASoC: fsl_micfil: register platform component before registering cpu dai (git-fixes).
• ASoC: Intel: Fix platform ID matching (git-fixes).
• ASoC: mediatek: common: handle NULL case in suspend/resume function (git-fixes).
• ASoC: rockchip: i2s: Fix regmap_ops hang (git-fixes).
• ASoC: rockchip: i2s: Fixup config for DAIFMT_DSP_A/B (git-fixes).
• ASoC: rt5682: Implement remove callback (git-fixes).
• ASoC: rt5682: Properly turn off regulators if wrong device ID (git-fixes).
• ASoC: rt5682: Remove unused variable in rt5682_i2c_remove() (git-fixes).
• ASoC: SOF: Fix DSP oops stack dump output contents (git-fixes).
• ath9k: fix OOB read ar9300_eeprom_restore_internal (git-fixes).
• ath9k: fix sleeping in atomic context (git-fixes).
• backlight: pwm_bl: Improve bootloader/kernel device handover (git-fixes).
• bareudp: Fix invalid read beyond skb's linear data (jsc#SLE-15172).
• blk-mq: do not deactivate hctx if managed irq isn't used (bsc#1185762).
• blk-mq: do not deactivate hctx if managed irq isn't used (bsc#1185762).
• blk-mq: kABI fixes for blk_mq_queue_map (bsc#1185762).
• blk-mq: kABI fixes for blk_mq_queue_map (bsc#1185762).
• blk-mq: mark if one queue map uses managed irq (bsc#1185762).
• blk-mq: mark if one queue map uses managed irq (bsc#1185762).
• Bluetooth: skip invalid hci_sync_conn_complete_evt (git-fixes).
• bnx2x: fix an error code in bnx2x_nic_load() (git-fixes).
• bnxt_en: Add missing DMA memory barriers (git-fixes).
• bnxt_en: Disable aRFS if running on 212 firmware (git-fixes).
• bnxt_en: Do not enable legacy TX push on older firmware (git-fixes).
• bnxt_en: Fix asic.rev in devlink dev info command (jsc#SLE-16649).
• bnxt_en: fix stored FW_PSID version masks (jsc#SLE-16649).
• bnxt_en: Store the running firmware version code (git-fixes).
• bnxt: count Tx drops (git-fixes).
• bnxt: disable napi before canceling DIM (git-fixes).
• bnxt: do not lock the tx queue from napi poll (git-fixes).
• bnxt: make sure xmit_more + errors does not miss doorbells (git-fixes).
• bpf, samples: Add missing mprog-disable to xdp_redirect_cpu's optstring (git-fixes).
• bpf: Fix ringbuf helper function compatibility (git-fixes).
• bpftool: Add sock_release help info for cgroup attach/prog load command (bsc#1177028).
• btrfs: prevent rename2 from exchanging a subvol with a directory from different parents (bsc#1190626).
• clk: at91: clk-generated: Limit the requested rate to our range (git-fixes).
• clk: at91: clk-generated: pass the id of changeable parent at registration (git-fixes).
• console: consume APC, DM, DCS (git-fixes).
• cpuidle: pseries: Do not cap the CEDE0 latency in fixup_cede0_latency() (bsc#1185550 ltc#192610 git-fixes…

The SUSE Linux Enterprise 15 SP3 kernel was updated.

The following security bugs were fixed:

• CVE-2020-3702: Fixed a bug which could be triggered with specifically timed and handcrafted traffic and cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure. (bnc#1191193)
• CVE-2021-3752: Fixed a use after free vulnerability in the Linux kernel's bluetooth module. (bsc#1190023)
• CVE-2021-40490: Fixed a race condition discovered in the ext4 subsystem that could leat to local priviledge escalation. (bnc#1190159)
• CVE-2021-3744: Fixed a bug which could allows attackers to cause a denial of service. (bsc#1189884)
• CVE-2021-3764: Fixed a bug which could allows attackers to cause a denial of service. (bsc#1190534)
• CVE-2021-3669: Fixed a bug that doesn't allow /proc/sysvipc/shm to scale with large shared memory segment counts which could lead to resource exhaustion and DoS. (bsc#1188986)
• CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).
• CVE-2021-3743: Fixed OOB Read in qrtr_endpoint_post (bsc#1189883).
• CVE-2021-3739: Fixed a NULL pointer dereference when deleting device by invalid id (bsc#1189832 ).
• CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400).
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2020-12770: Fixed sg_remove_request call in a certain failure cases (bsc#1171420).

The following non-security bugs were fixed:

• ACPI: processor: Clean up acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Export function to claim _CST control (bsc#1175543)
• ACPI: processor: Introduce acpi_processor_evaluate_cst() (bsc#1175543)
• ACPI: processor: Make ACPI_PROCESSOR_CSTATE depend on ACPI_PROCESSOR (bsc#1175543)
• ALSA: firewire-motu: fix truncated bytes in message tracepoints (git-fixes).
• ALSA: hda - fix the 'Capture Switch' value change notifications (git-fixes).
• ALSA: hda/realtek: Enable 4-speaker output for Dell XPS 15 9510 laptop (git-fixes).
• ALSA: hda/realtek: Limit mic boost on HP ProBook 445 G8 (git-fixes).
• ALSA: hda/realtek: Quirk for HP Spectre x360 14 amp setup (git-fixes).
• ALSA: hda/realtek: Workaround for conflicting SSID on ASUS ROG Strix G17 (git-fixes).
• ALSA: hda/realtek: Workaround for conflicting SSID on ASUS ROG Strix G17 (git-fixes).
• ALSA: hda/via: Apply runtime PM workaround for ASUS B23E (git-fixes).
• ALSA: pcm: fix divide error in snd_pcm_lib_ioctl (git-fixes).
• ALSA: usb-audio: Add registration quirk for JBL Quantum 800 (git-fixes).
• ALSA: usb-audio: Fix regression on Sony WALKMAN NW-A45 DAC (git-fixes).
• apparmor: remove duplicate macro list_entry_is_head() (git-fixes).
• ASoC: component: Remove misplaced prefix handling in pin control functions…

The SUSE Linux Enterprise 15 SP1 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

• CVE-2021-3655: Missing size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory (bnc#1188563).

• CVE-2021-33033: The Linux kernel has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value (bnc#1186109 bnc#1186390 bnc#1188876).

• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).

• CVE-2021-42739: The firewire subsystem in the Linux kernel has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bnc#1184673).

• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).

• CVE-2018-13405: The inode_init_owner function in fs/inode.c in the Linux kernel allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1100416 bnc#1129735).

• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).

• CVE-2021-34556: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack (bnc#1188983).

• CVE-2021-35477: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation did not necessarily occur before a store operation that has an attacker-controlled value (bnc#1188985).

• CVE-2021-42252: An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel Local attackers able to access the Aspeed LPC control interface could overwrite memory in…

The SUSE Linux Enterprise 12 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

The following security bugs were fixed:

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).
• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).
• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)
• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails. (bsc#1191961)
• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).
• CVE-2021-37159: Fixed use-after-free and a double free inside hso_free_net_device in drivers/net/usb/hso.c when unregister_netdev is called without checking for the NETREG_REGISTERED state (bnc#1188601).
• CVE-2020-3702: Fixed a bug which could be triggered with specifically timed and handcrafted traffic and cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure. (bnc#1191193)
• CVE-2021-3752: Fixed a use after free vulnerability in the Linux kernel's bluetooth module. (bsc#1190023)
• CVE-2021-40490: Fixed a race condition discovered in the ext4 subsystem that could leat to local priviledge escalation. (bnc#1190159)
• CVE-2021-3744: Fixed a bug which could allows attackers to cause a denial of service. (bsc#1189884)
• CVE-2021-3764: Fixed a bug which could allows attackers to cause a denial of service. (bsc#1190534)
• CVE-2021-3772: Fixed a remote denial of service in the SCTP stack, if the attacker can spoof IP addresses and knows the IP-addresses and port numbers being used (bnc#1190351).
• CVE-2018-9517: Fixed possible memory corruption due to a use after free in pppol2tp_connect (bsc#1108488).
• CVE-2019-3874: Fixed possible denial of service attack via SCTP socket buffer used by a userspace applications…

It was discovered that a race condition existed in the Atheros Ath9k WiFi driver in the Linux kernel. An attacker could possibly use this to expose sensitive information (WiFi network traffic). (CVE-2020-3702)

Ofek Kirzner, Adam Morrison, Benedict Schlueter, and Piotr Krysiuk discovered that the BPF verifier in the Linux kernel missed possible mispredicted branches due to type confusion, allowing a side-channel attack. An attacker could use this to expose sensitive information. (CVE-2021-33624)

Benedict Schlueter discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side- channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-34556)

Piotr Krysiuk discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side-channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-35477)

It was discovered that the tracing subsystem in the Linux kernel did not properly keep track of per-cpu ring buffer state. A privileged attacker could use this to cause a denial of service. (CVE-2021-3679)

It was discovered that the Option USB High Speed Mobile device driver in the Linux kernel did not properly handle error conditions. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-37159)

Alois Wohlschlager discovered that the overlay file system in the Linux kernel did not restrict private clones in some situations. An attacker could use this to expose sensitive information. (CVE-2021-3732)

It was discovered that the btrfs file system in the Linux kernel did not properly handle removing a non-existent device id. An attacker with CAP_SYS_ADMIN could use this to cause a denial of service. (CVE-2021-3739)

It was discovered that the Qualcomm IPC Router protocol implementation in the Linux kernel did not properly validate metadata in some situations. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information. (CVE-2021-3743)

It was discovered that the virtual terminal (vt) device implementation in the Linux kernel contained a race condition in its ioctl handling that led to an out-of-bounds read vulnerability. A local attacker could possibly use this to expose sensitive information. (CVE-2021-3753)

It was discovered that the Linux kernel did not properly account for the memory usage of certain IPC objects. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3759)

It was discovered that the BPF subsystem in the Linux kernel contained an integer overflow in its hash table implementation. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-38166)

It was discovered that the MAX-3421 host USB device driver in the Linux kernel did not properly handle device removal events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2021-38204)

It was discovered that the Xilinx 10/100 Ethernet Lite device driver in the Linux kernel could report pointer addresses in some situations. An attacker could use this information to ease the exploitation of another vulnerability. (CVE-2021-38205)

It was discovered that the ext4 file system in the Linux kernel contained a race condition when writing xattrs to an inode. A local attacker could use this to cause a denial of service or possibly gain administrative privileges. (CVE-2021-40490)

It was discovered that the 6pack network protocol driver in the Linux kernel did not properly perform validation checks. A privileged attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-42008)

It was discovered that the btrfs file system in the Linux kernel did not properly handle removing a non-existent device id. An attacker with CAP_SYS_ADMIN could use this to cause a denial of service. (CVE-2021-3739)

It was discovered that the Qualcomm IPC Router protocol implementation in the Linux kernel did not properly validate metadata in some situations. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information. (CVE-2021-3743)

It was discovered that the virtual terminal (vt) device implementation in the Linux kernel contained a race condition in its ioctl handling that led to an out-of-bounds read vulnerability. A local attacker could possibly use this to expose sensitive information. (CVE-2021-3753)

It was discovered that the Linux kernel did not properly account for the memory usage of certain IPC objects. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3759)

It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-19449)

It was discovered that the Linux kernel did not properly enforce certain types of entries in the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. An attacker could use this to bypass UEFI Secure Boot restrictions. (CVE-2020-26541)

It was discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel did not ensure enough processing time was given to perform cleanups of large SEV VMs. A local attacker could use this to cause a denial of service (soft lockup). (CVE-2020-36311)

It was discovered that the KVM hypervisor implementation in the Linux kernel did not properly perform reference counting in some situations, leading to a use-after-free vulnerability. An attacker who could start and control a VM could possibly use this to expose sensitive information or execute arbitrary code. (CVE-2021-22543)

Murray McAllister discovered that the joystick device interface in the Linux kernel did not properly validate data passed via an ioctl(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code on systems with a joystick device registered. (CVE-2021-3612)

It was discovered that the Linux kernel did not properly account for the memory usage of certain IPC objects. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3759)

Michael Wakabayashi discovered that the NFSv4 client implementation in the Linux kernel did not properly order connection setup operations. An attacker controlling a remote NFS server could use this to cause a denial of service on the client. (CVE-2021-38199)

It was discovered that the Xilinx LL TEMAC device driver in the Linux kernel did not properly calculate the number of buffers to be used in certain situations. A remote attacker could use this to cause a denial of service (system crash). (CVE-2021-38207)

It was discovered that the ext4 file system in the Linux kernel contained a race condition when writing xattrs to an inode. A local attacker could use this to cause a denial of service or possibly gain administrative privileges. (CVE-2021-40490)

It was discovered that the Linux kernel did not properly account for the memory usage of certain IPC objects. A local attacker could use this to cause a denial of service (memory exhaustion).

It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-19449)

It was discovered that the FUSE user space file system implementation in the Linux kernel did not properly handle bad inodes in some situations. A local attacker could possibly use this to cause a denial of service. (CVE-2020-36322)

It was discovered that the Infiniband RDMA userspace connection manager implementation in the Linux kernel contained a race condition leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possible execute arbitrary code. (CVE-2020-36385)

Ilja Van Sprundel discovered that the SCTP implementation in the Linux kernel did not properly perform size validations on incoming packets in some situations. An attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2021-3655)

It was discovered that the Qualcomm IPC Router protocol implementation in the Linux kernel did not properly validate metadata in some situations. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information. (CVE-2021-3743)

It was discovered that the virtual terminal (vt) device implementation in the Linux kernel contained a race condition in its ioctl handling that led to an out-of-bounds read vulnerability. A local attacker could possibly use this to expose sensitive information. (CVE-2021-3753)

It was discovered that the Linux kernel did not properly account for the memory usage of certain IPC objects. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3759)

Michael Wakabayashi discovered that the NFSv4 client implementation in the Linux kernel did not properly order connection setup operations. An attacker controlling a remote NFS server could use this to cause a denial of service on the client. (CVE-2021-38199)

It was discovered that the Aspeed Low Pin Count (LPC) Bus Controller implementation in the Linux kernel did not properly perform boundary checks in some situations, allowing out-of-bounds write access. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. In Ubuntu, this issue only affected systems running armhf kernels. (CVE-2021-42252)

It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-19449)

It was discovered that the Infiniband RDMA userspace connection manager implementation in the Linux kernel contained a race condition leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possible execute arbitrary code. (CVE-2020-36385)

Wolfgang Frisch discovered that the ext4 file system implementation in the Linux kernel contained an integer overflow when handling metadata inode extents. An attacker could use this to construct a malicious ext4 file system image that, when mounted, could cause a denial of service (system crash). (CVE-2021-3428)

Benedict Schlueter discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side- channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-34556)

Piotr Krysiuk discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side-channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-35477)

It was discovered that the btrfs file system in the Linux kernel did not properly handle removing a non-existent device id. An attacker with CAP_SYS_ADMIN could use this to cause a denial of service. (CVE-2021-3739)

It was discovered that the Qualcomm IPC Router protocol implementation in the Linux kernel did not properly validate metadata in some situations. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information. (CVE-2021-3743)

It was discovered that the virtual terminal (vt) device implementation in the Linux kernel contained a race condition in its ioctl handling that led to an out-of-bounds read vulnerability. A local attacker could possibly use this to expose sensitive information. (CVE-2021-3753)

It was discovered that the Linux kernel did not properly account for the memory usage of certain IPC objects. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3759)

It was discovered that the Aspeed Low Pin Count (LPC) Bus Controller implementation in the Linux kernel did not properly perform boundary checks in some situations, allowing out-of-bounds write access. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. In Ubuntu, this issue only affected systems running armhf kernels. (CVE-2021-42252)

It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-19449)

It was discovered that the Infiniband RDMA userspace connection manager implementation in the Linux kernel contained a race condition leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possible execute arbitrary code. (CVE-2020-36385)

Wolfgang Frisch discovered that the ext4 file system implementation in the Linux kernel contained an integer overflow when handling metadata inode extents. An attacker could use this to construct a malicious ext4 file system image that, when mounted, could cause a denial of service (system crash). (CVE-2021-3428)

Benedict Schlueter discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side- channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-34556)

Piotr Krysiuk discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side-channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-35477)

It was discovered that the btrfs file system in the Linux kernel did not properly handle removing a non-existent device id. An attacker with CAP_SYS_ADMIN could use this to cause a denial of service. (CVE-2021-3739)

It was discovered that the Qualcomm IPC Router protocol implementation in the Linux kernel did not properly validate metadata in some situations. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information. (CVE-2021-3743)

It was discovered that the virtual terminal (vt) device implementation in the Linux kernel contained a race condition in its ioctl handling that led to an out-of-bounds read vulnerability. A local attacker could possibly use this to expose sensitive information. (CVE-2021-3753)

It was discovered that the Linux kernel did not properly account for the memory usage of certain IPC objects. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3759)