CVE-2020-4788

The Linux Kernel, the operating system core itself.

Security Fix(es):

In drivers/target/target_core_xcopy.c in the Linux kernel before 5.10.7, insufficient identifier checking in the LIO SCSI target code can be used by remote attackers to read or write files via directory traversal in an XCOPY request, aka CID-2896c93811e3. For example, an attack can occur over a network if the attacker has access to one iSCSI LUN. The attacker gains control over file access because I/O operations are proxied via an attacker-selected backstore.(CVE-2020-28374)

An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable.(CVE-2020-29568)

In the nl80211_policy policy of nl80211.c, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not required for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-119770583(CVE-2020-27068)

A flaw was found in the Linux kernels implementation of MIDI, where an attacker with a local account and the permissions to issue an ioctl commands to midi devices, could trigger a use-after-free. A write to this specific memory while freed and before use could cause the flow of execution to change and possibly allow for memory corruption or privilege escalation.(CVE-2020-27786)

An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.(CVE-2021-3347)

nbd_add_socket in drivers/block/nbd.c in the Linux kernel through 5.10.12 has an ndb_queue_rq use-after-free that could be triggered by local attackers (with access to the nbd device) via an I/O request at a certain point during device setup, aka CID-b98e762e3d71.(CVE-2021-3348)

In binder_release_work of binder.c, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.(CVE-2020-0423)

mwifiex_cmd_802_11_ad_hoc_start in drivers/net/wireless/marvell/mwifiex/join.c in the Linux kernel through 5.10.4 might allow remote attackers to execute arbitrary code via a long SSID value, aka CID-5c455c5ab332.(CVE-2020-36158)

Insufficient access control in the Linux kernel driver for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.(CVE-2020-8694)

IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances. (CVE-2020-4788)

An issue was discovered in the Linux kernel through 5.2.13. nbd_genl_status in drivers/block/nbd.c does not check the nla_nest_start_noflag return value.(CVE-2019-16089)

In various methods of hid-multitouch.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.(CVE-2020-0465)

In do_epoll_ctl and ep_loop_check_proc of eventpoll.c, there is a possible use after free due to a logic error. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.(CVE-2020-0466)

A flaw was found in the Linux kernel futex implementation. This flaw allows a local attacker to corrupt system memory or escalate their privileges when creating a futex on a filesystem that is…

The Linux Kernel, the operating system core itself.

Security Fix(es):

In drivers/target/target_core_xcopy.c in the Linux kernel before 5.10.7, insufficient identifier checking in the LIO SCSI target code can be used by remote attackers to read or write files via directory traversal in an XCOPY request, aka CID-2896c93811e3. For example, an attack can occur over a network if the attacker has access to one iSCSI LUN. The attacker gains control over file access because I/O operations are proxied via an attacker-selected backstore.(CVE-2020-28374)

An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable.(CVE-2020-29568)

In the nl80211_policy policy of nl80211.c, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not required for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-119770583(CVE-2020-27068)

A flaw was found in the Linux kernels implementation of MIDI, where an attacker with a local account and the permissions to issue an ioctl commands to midi devices, could trigger a use-after-free. A write to this specific memory while freed and before use could cause the flow of execution to change and possibly allow for memory corruption or privilege escalation.(CVE-2020-27786)

An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.(CVE-2021-3347)

nbd_add_socket in drivers/block/nbd.c in the Linux kernel through 5.10.12 has an ndb_queue_rq use-after-free that could be triggered by local attackers (with access to the nbd device) via an I/O request at a certain point during device setup, aka CID-b98e762e3d71.(CVE-2021-3348)

In binder_release_work of binder.c, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.(CVE-2020-0423)

mwifiex_cmd_802_11_ad_hoc_start in drivers/net/wireless/marvell/mwifiex/join.c in the Linux kernel through 5.10.4 might allow remote attackers to execute arbitrary code via a long SSID value, aka CID-5c455c5ab332.(CVE-2020-36158)

Insufficient access control in the Linux kernel driver for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.(CVE-2020-8694)

IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances. (CVE-2020-4788)

An issue was discovered in the Linux kernel through 5.2.13. nbd_genl_status in drivers/block/nbd.c does not check the nla_nest_start_noflag return value.(CVE-2019-16089)

In various methods of hid-multitouch.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.(CVE-2020-0465)

In do_epoll_ctl and ep_loop_check_proc of eventpoll.c, there is a possible use after free due to a logic error. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.(CVE-2020-0466)

A flaw was found in the Linux kernel's implementation of string matching within a packet. A privileged user (with root or CAP_NET_ADMIN) when inserting iptables rules could insert a rule which can…

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.

IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances. IBM X-Force ID: 189296.

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.

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

The following security bugs were fixed:

• CVE-2020-29369: There was a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe (bnc#1173504 bnc#1179432).
• CVE-2020-29371: An issue was discovered in romfs_dev_read in fs/romfs/storage.c, where uninitialized memory could leak to userspace, aka CID-bcf85fcedfdd (bnc#1179429).
• CVE-2020-15436: Use-after-free vulnerability in fs/block_dev.c allowed local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field (bnc#1179141).
• CVE-2020-25705: A flaw in the way reply ICMP packets are limited was found that allowed to quickly scan open UDP ports. This flaw allowed an off-path remote user to effectively bypassing source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well. Kernel versions may be vulnerable to this issue (bnc#1175721 bnc#1178782).
• CVE-2020-15437: The Linux kernel was vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allowed local users to cause a denial of service by using the p->serial_in pointer which uninitialized (bnc#1179140).
• CVE-2020-27777: Restricted RTAS requests from userspace (bsc#1179107).
• CVE-2020-28974: A slab-out-of-bounds read in fbcon could be used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for manipulations such as font height (bnc#1178589).
• CVE-2020-4788: IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances. IBM X-Force ID: 189296 (bnc#1177666).
• CVE-2020-28941: Local attackers on systems with the speakup driver could cause a local denial of service attack, aka CID-d41227544427. This occurs because of an invalid free when the line discipline is used more than once (bnc#1178740).
• CVE-2020-28915: A buffer over-read (at the framebuffer layer) in the fbcon code could be used by local attackers to read kernel memory, aka CID-6735b4632def (bnc#1178886).
• CVE-2020-25669: Avoid a use-after-free in teardown paths in sunkbd (bsc#1178182).

The following non-security bugs were fixed:

• 9P: Cast to loff_t before multiplying (git-fixes).
• ACPI: GED: fix -Wformat (git-fixes).
• ACPI: NFIT: Fix comparison to '-ENXIO' (git-fixes).
• ACPI: button: Add DMI quirk for Medion Akoya E2228T (git-fixes).
• ACPI: dock: fix enum-conversion warning (git-fixes).
• ACPICA: Add NHLT table signature (bsc#1176200).
• ALSA: ctl: fix error path at adding user-defined element set (git-fixes).
• ALSA: firewire: Clean up a locking issue in copy_resp_to_buf() (git-fixes).
• ALSA: hda/realtek - Add supported for Lenovo ThinkPad Headset Button (git-fixes).
• ALSA: hda/realtek - Add supported mute Led for HP (git-fixes).
• ALSA: hda/realtek - HP Headset Mic can't detect after boot (git-fixes).
• ALSA: hda/realtek: Add some Clove SSID in the ALC293(ALC1220) (git-fixes).
• ALSA: hda: Reinstate runtime_allow() for all hda controllers (git-fixes).
• ALSA: hda: fix jack detection with Realtek codecs when in D3 (git-fixes).
• ALSA: mixart: Fix mutex deadlock (git-fixes).
• ALSA: usb-audio: Add delay quirk for all Logitech USB devices (git-fixes).
• ASoC: qcom: lpass-platform: Fix memory leak (git-fixes).
• Add bug reference to two hv_netvsc patches (bsc#1178853).
• Convert trailing spaces and periods in path components (bsc#1179424).
• Documentation/admin-guide/module-signing.rst: add openssl command option example for CodeSign EKU (bsc#1177353, bsc#1179076).
• Drop sysctl files for…

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

The following security bugs were fixed:

• CVE-2020-29371: An issue was discovered in romfs_dev_read in fs/romfs/storage.c where uninitialized memory leaks to userspace, aka CID-bcf85fcedfdd (bnc#1179429).
• CVE-2020-15436: Use-after-free vulnerability in fs/block_dev.c allowed local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field (bnc#1179141).
• CVE-2020-4788: IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances. IBM X-Force ID: 189296 (bnc#1177666).
• CVE-2018-20669: An issue where a provided address with access_ok() is not checked was discovered in i915_gem_execbuffer2_ioctl in drivers/gpu/drm/i915/i915_gem_execbuffer.c, where a local attacker can craft a malicious IOCTL function call to overwrite arbitrary kernel memory, resulting in a Denial of Service or privilege escalation (bnc#1122971).
• CVE-2020-15437: The Linux kernel was vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allowed local users to cause a denial of service by using the p->serial_in pointer which uninitialized (bnc#1179140).
• CVE-2020-27777: Restrict RTAS requests from userspace (CVE-2020-27777 bsc#1179107).
• CVE-2020-28974: A slab-out-of-bounds read in fbcon could be used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for manipulations such as font height (bnc#1178589).

The following non-security bugs were fixed:

• ACPI: GED: fix -Wformat (git-fixes).
• ALSA: ctl: fix error path at adding user-defined element set (git-fixes).
• ALSA: firewire: Clean up a locking issue in copy_resp_to_buf() (git-fixes).
• ALSA: mixart: Fix mutex deadlock (git-fixes).
• ASoC: qcom: lpass-platform: Fix memory leak (git-fixes).
• Bluetooth: btusb: Fix and detect most of the Chinese Bluetooth controllers (git-fixes).
• Bluetooth: hci_bcm: fix freeing not-requested IRQ (git-fixes).
• Convert trailing spaces and periods in path components (bsc#1179424).
• Drivers: hv: vmbus: Remove the unused 'tsc_page' from struct hv_context (git-fixes).
• IB/cma: Fix ports memory leak in cma_configfs (bsc#1111666)
• IB/core: Set qp->real_qp before it may be accessed (bsc#1111666)
• IB/hfi1, qib: Ensure RCU is locked when accessing list (bsc#1111666)
• IB/hfi1: Add RcvShortLengthErrCnt to hfi1stats (bsc#1111666)
• IB/hfi1: Add missing INVALIDATE opcodes for trace (bsc#1111666)
• IB/hfi1: Add software counter for ctxt0 seq drop (bsc#1111666)
• IB/hfi1: Avoid hardlockup with flushlist_lock (bsc#1111666)
• IB/hfi1: Call kobject_put() when kobject_init_and_add() fails (bsc#1111666)
• IB/hfi1: Check for error on call to alloc_rsm_map_table (bsc#1111666)
• IB/hfi1: Close PSM sdma_progress sleep window (bsc#1111666)
• IB/hfi1: Define variables as unsigned long to fix KASAN warning (bsc#1111666)
• IB/hfi1: Ensure full Gen3 speed in a Gen4 system (bsc#1111666)
• IB/hfi1: Fix Spectre v1 vulnerability (bsc#1111666)
• IB/hfi1: Fix memory leaks in sysfs registration and unregistration (bsc#1111666)
• IB/hfi1: Handle port down properly in pio (bsc#1111666)
• IB/hfi1: Handle wakeup of orphaned QPs for pio (bsc#1111666)
• IB/hfi1: Insure freeze_work work_struct is canceled on shutdown (bsc#1111666)
• IB/hfi1: Remove unused define (bsc#1111666)
• IB/hfi1: Silence txreq allocation warnings (bsc#1111666)
• IB/hfi1: Validate page aligned for a given virtual address (bsc#1111666)
• IB/hfi1: Wakeup QPs orphaned on wait list after flush (bsc#1111666)
• IB/ipoib: Fix double free of skb in case of multicast traffic in CM mode (bsc#1111666)
• IB/ipoib: Fix for use-after-free in ipoib_cm_tx_start (bsc#1111666)
• IB/ipoib: drop useless LIST_HEAD (bsc#1111666) -…

The SUSE Linux Enterprise 15 SP2 kernel was updated to 3.12.31 to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
• CVE-2020-15437: Fixed a null pointer dereference which could have allowed local users to cause a denial of service(bsc#1179140).
• CVE-2020-25668: Fixed a concurrency use-after-free in con_font_op (bsc#1178123).
• CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).
• CVE-2020-25704: Fixed a leak in perf_event_parse_addr_filter() (bsc#1178393).
• CVE-2020-27777: Restrict RTAS requests from userspace (bsc#1179107)
• CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).
• CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have been used by local attackers to read privileged information or potentially crash the kernel (bsc#1178589).
• CVE-2020-29371: Fixed uninitialized memory leaks to userspace (bsc#1179429).
• CVE-2020-25705: Fixed an issue which could have allowed to quickly scan open UDP ports. This flaw allowed an off-path remote user to effectively bypassing source port UDP randomization (bsc#1175721).
• CVE-2020-28941: Fixed an issue where local attackers on systems with the speakup driver could cause a local denial of service attack (bsc#1178740).
• CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).
• CVE-2020-29369: Fixed a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe (bnc#1173504 1179432).

The following non-security bugs were fixed:

• 9P: Cast to loff_t before multiplying (git-fixes).
• ACPI: button: Add DMI quirk for Medion Akoya E2228T (git-fixes).
• ACPICA: Add NHLT table signature (bsc#1176200).
• ACPI: dock: fix enum-conversion warning (git-fixes).
• ACPI / extlog: Check for RDMSR failure (git-fixes).
• ACPI: GED: fix -Wformat (git-fixes).
• ACPI: NFIT: Fix comparison to '-ENXIO' (git-fixes).
• ACPI: video: use ACPI backlight for HP 635 Notebook (git-fixes).
• Add bug reference to two hv_netvsc patches (bsc#1178853).
• ALSA: ctl: fix error path at adding user-defined element set (git-fixes).
• ALSA: firewire: Clean up a locking issue in copy_resp_to_buf() (git-fixes).
• ALSA: fix kernel-doc markups (git-fixes).
• ALSA: hda: fix jack detection with Realtek codecs when in D3 (git-fixes).
• ALSA: hda: prevent undefined shift in snd_hdac_ext_bus_get_link() (git-fixes).
• ALSA: hda/realtek: Add some Clove SSID in the ALC293(ALC1220) (git-fixes).
• ALSA: hda/realtek - Add supported for Lenovo ThinkPad Headset Button (git-fixes).
• ALSA: hda/realtek - Add supported mute Led for HP (git-fixes).
• ALSA: hda/realtek - Enable headphone for ASUS TM420 (git-fixes).
• ALSA: hda/realtek - Fixed HP headset Mic can't be detected (git-fixes).
• ALSA: hda/realtek - HP Headset Mic can't detect after boot (git-fixes).
• ALSA: hda: Reinstate runtime_allow() for all hda controllers (git-fixes).
• ALSA: mixart: Fix mutex deadlock (git-fixes).
• ALSA: usb-audio: Add delay quirk for all Logitech USB devices (git-fixes).
• ALSA: usb-audio: Add implicit feedback quirk for MODX (git-fixes).
• ALSA: usb-audio: Add implicit feedback quirk for Qu-16 (git-fixes).
• ALSA: usb-audio: Add implicit feedback quirk for Zoom UAC-2 (git-fixes).
• ALSA: usb-audio: add usb vendor id as DSD-capable for Khadas devices (git-fixes).
• arm64: bpf: Fix branch offset in JIT (git-fixes).
• arm64: dts: allwinner: a64: bananapi-m64: Enable RGMII RX/TX delay on PHY (git-fixes).
• arm64: dts: allwinner: a64: OrangePi Win: Fix ethernet node (git-fixes).
• arm64:…

The openSUSE Leap 15.1 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2020-29568: An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable (bnc#1179508).
• CVE-2020-29569: The Linux kernel PV block backend expects the kernel thread handler to reset ring->xenblkd to NULL when stopped. However, the handler may not have time to run if the frontend quickly toggles between the states connect and disconnect. As a consequence, the block backend may re-use a pointer after it was freed. A misbehaving guest can trigger a dom0 crash by continuously connecting / disconnecting a block frontend. Privilege escalation and information leaks cannot be ruled out. This only affects systems with a Linux blkback (bnc#1179509).
• CVE-2020-25639: Bail out of nouveau_channel_new if channel init fails (bsc#1176846).
• CVE-2020-28374: In drivers/target/target_core_xcopy.c insufficient identifier checking in the LIO SCSI target code can be used by remote attackers to read or write files via directory traversal in an XCOPY request, aka CID-2896c93811e3. For example, an attack can occur over a network if the attacker has access to one iSCSI LUN. The attacker gains control over file access because I/O operations are proxied via an attacker-selected backstore (bnc#1178372 1180676).
• CVE-2020-36158: mwifiex_cmd_802_11_ad_hoc_start in drivers/net/wireless/marvell/mwifiex/join.c might allow remote attackers to execute arbitrary code via a long SSID value, aka CID-5c455c5ab332 (bnc#1180559).
• CVE-2020-27825: A use-after-free flaw was found in kernel/trace/ring_buffer.c. There was a race problem in trace_open and resize of cpu buffer running parallely on different cpus, may cause a denial of service problem (DOS). This flaw could even allow a local attacker with special user privilege to a kernel information leak threat (bnc#1179960).
• CVE-2020-0466: In do_epoll_ctl and ep_loop_check_proc of eventpoll.c, there is a possible use after free due to a logic error. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation (bnc#1180031).
• CVE-2020-27068: In the nl80211_policy policy of nl80211.c, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not required for exploitation (bnc#1180086).
• CVE-2020-0465: In various methods of hid-multitouch.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation (bnc#1180029).
• CVE-2020-0444: In audit_free_lsm_field of auditfilter.c, there is a possible bad kfree due to a logic error in audit_data_to_entry. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation (bnc#1180027).
• CVE-2020-29660: A locking inconsistency issue was discovered in the tty subsystem of the Linux kernel drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may have allowed a read-after-free attack against TIOCGSID, aka CID-c8bcd9c5be24 (bnc#1179745).
• CVE-2020-29661: A locking issue was discovered in the tty subsystem of the Linux kernel drivers/tty/tty_jobctrl.c allowed a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b (bnc#1179745).
• CVE-2020-27777: A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure…

This update syncs the RT kernel from the SUSE Linux Enterprise 15-SP2 codestream.

This update was imported from the SUSE:SLE-15-SP2:Update update project.

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 15 SP2 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
• CVE-2020-15437: Fixed a null pointer dereference which could have allowed local users to cause a denial of service(bsc#1179140).
• CVE-2020-25668: Fixed a concurrency use-after-free in con_font_op (bsc#1178123).
• CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).
• CVE-2020-25704: Fixed a leak in perf_event_parse_addr_filter() (bsc#1178393).
• CVE-2020-27777: Restrict RTAS requests from userspace (bsc#1179107)
• CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).
• CVE-2020-28941: Fixed an issue where local attackers on systems with the speakup driver could cause a local denial of service attack (bsc#1178740).
• CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have been used by local attackers to read privileged information or potentially crash the kernel (bsc#1178589).
• CVE-2020-29371: Fixed uninitialized memory leaks to userspace (bsc#1179429).
• CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).
• CVE-2020-8694, CVE-2020-8695: Fixed an insufficient access control in the Linux kernel driver for some Intel(R) Processors which might have allowed an authenticated user to potentially enable information disclosure via local access (bsc#1170415 bsc#1170446)
• CVE-2020-28368: Fixed Intel RAPL sidechannel attack aka PLATYPUS attack (XSA-351 bsc#1178591).
• CVE-2020-29369: Fixed a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe (bnc#1173504 bsc#1179432).

The following non-security bugs were fixed:

• 9P: Cast to loff_t before multiplying (git-fixes).
• ACPI: button: Add DMI quirk for Medion Akoya E2228T (git-fixes).
• ACPICA: Add NHLT table signature (bsc#1176200).
• ACPI: dock: fix enum-conversion warning (git-fixes).
• ACPI / extlog: Check for RDMSR failure (git-fixes).
• ACPI: GED: fix -Wformat (git-fixes).
• ACPI: NFIT: Fix comparison to '-ENXIO' (git-fixes).
• ACPI: video: use ACPI backlight for HP 635 Notebook (git-fixes).
• Add bug reference to two hv_netvsc patches (bsc#1178853).
• ALSA: ctl: fix error path at adding user-defined element set (git-fixes).
• ALSA: firewire: Clean up a locking issue in copy_resp_to_buf() (git-fixes).
• ALSA: fix kernel-doc markups (git-fixes).
• ALSA: hda: fix jack detection with Realtek codecs when in D3 (git-fixes).
• ALSA: hda: prevent undefined shift in snd_hdac_ext_bus_get_link() (git-fixes).
• ALSA: hda/realtek: Add some Clove SSID in the ALC293(ALC1220) (git-fixes).
• ALSA: hda/realtek - Add supported for Lenovo ThinkPad Headset Button (git-fixes).
• ALSA: hda/realtek - Add supported mute Led for HP (git-fixes).
• ALSA: hda/realtek - Enable headphone for ASUS TM420 (git-fixes).
• ALSA: hda/realtek - Fixed HP headset Mic can't be detected (git-fixes).
• ALSA: hda/realtek - HP Headset Mic can't detect after boot (git-fixes).
• ALSA: hda: Reinstate runtime_allow() for all hda controllers (git-fixes).
• ALSA: mixart: Fix mutex deadlock (git-fixes).
• ALSA: usb-audio: Add delay quirk for all Logitech USB devices (git-fixes).
• ALSA: usb-audio: Add implicit feedback quirk for MODX (git-fixes).
• ALSA: usb-audio: Add implicit feedback quirk for Qu-16 (git-fixes).
• ALSA: usb-audio: Add implicit feedback quirk for Zoom UAC-2 (git-fixes).
• ALSA: usb-audio: add usb vendor id as DSD-capable for Khadas devices (git-fixes).
• arm64: bpf: Fix branch offset in JIT (git-fixes).
• arm64: dts:…

The SUSE Linux Enterprise 15 SP2 kernel was updated to 3.12.31 to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
• CVE-2020-15437: Fixed a null pointer dereference which could have allowed local users to cause a denial of service(bsc#1179140).
• CVE-2020-25668: Fixed a concurrency use-after-free in con_font_op (bsc#1178123).
• CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).
• CVE-2020-25704: Fixed a leak in perf_event_parse_addr_filter() (bsc#1178393).
• CVE-2020-27777: Restrict RTAS requests from userspace (bsc#1179107)
• CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).
• CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have been used by local attackers to read privileged information or potentially crash the kernel (bsc#1178589).
• CVE-2020-29371: Fixed uninitialized memory leaks to userspace (bsc#1179429).
• CVE-2020-25705: Fixed an issue which could have allowed to quickly scan open UDP ports. This flaw allowed an off-path remote user to effectively bypassing source port UDP randomization (bsc#1175721).
• CVE-2020-28941: Fixed an issue where local attackers on systems with the speakup driver could cause a local denial of service attack (bsc#1178740).
• CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).
• CVE-2020-29369: Fixed a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe (bnc#1173504 1179432).

The following non-security bugs were fixed:

• 9P: Cast to loff_t before multiplying (git-fixes).
• ACPI: button: Add DMI quirk for Medion Akoya E2228T (git-fixes).
• ACPICA: Add NHLT table signature (bsc#1176200).
• ACPI: dock: fix enum-conversion warning (git-fixes).
• ACPI / extlog: Check for RDMSR failure (git-fixes).
• ACPI: GED: fix -Wformat (git-fixes).
• ACPI: NFIT: Fix comparison to '-ENXIO' (git-fixes).
• ACPI: video: use ACPI backlight for HP 635 Notebook (git-fixes).
• Add bug reference to two hv_netvsc patches (bsc#1178853).
• ALSA: ctl: fix error path at adding user-defined element set (git-fixes).
• ALSA: firewire: Clean up a locking issue in copy_resp_to_buf() (git-fixes).
• ALSA: fix kernel-doc markups (git-fixes).
• ALSA: hda: fix jack detection with Realtek codecs when in D3 (git-fixes).
• ALSA: hda: prevent undefined shift in snd_hdac_ext_bus_get_link() (git-fixes).
• ALSA: hda/realtek: Add some Clove SSID in the ALC293(ALC1220) (git-fixes).
• ALSA: hda/realtek - Add supported for Lenovo ThinkPad Headset Button (git-fixes).
• ALSA: hda/realtek - Add supported mute Led for HP (git-fixes).
• ALSA: hda/realtek - Enable headphone for ASUS TM420 (git-fixes).
• ALSA: hda/realtek - Fixed HP headset Mic can't be detected (git-fixes).
• ALSA: hda/realtek - HP Headset Mic can't detect after boot (git-fixes).
• ALSA: hda: Reinstate runtime_allow() for all hda controllers (git-fixes).
• ALSA: mixart: Fix mutex deadlock (git-fixes).
• ALSA: usb-audio: Add delay quirk for all Logitech USB devices (git-fixes).
• ALSA: usb-audio: Add implicit feedback quirk for MODX (git-fixes).
• ALSA: usb-audio: Add implicit feedback quirk for Qu-16 (git-fixes).
• ALSA: usb-audio: Add implicit feedback quirk for Zoom UAC-2 (git-fixes).
• ALSA: usb-audio: add usb vendor id as DSD-capable for Khadas devices (git-fixes).
• arm64: bpf: Fix branch offset in JIT (git-fixes).
• arm64: dts: allwinner: a64: bananapi-m64: Enable RGMII RX/TX delay on PHY (git-fixes).
• arm64: dts: allwinner: a64: OrangePi Win: Fix ethernet node (git-fixes).
• arm64:…

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

The following security bugs were fixed:

• CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
• CVE-2020-15437: Fixed a null pointer dereference which could have allowed local users to cause a denial of service(bsc#1179140).
• CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).
• CVE-2020-25705: Fixed A flaw in the way reply ICMP packets are limited in was found that allowed to quickly scan open UDP ports. This flaw allowed an off-path remote user to effectively bypassing source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software and services that rely on UDP source port randomization (like DNS) are indirectly affected as well. Kernel versions may be vulnerable to this issue (bsc#1175721, bsc#1178782).
• CVE-2020-27777: Restrict RTAS requests from userspace (bsc#1179107)
• CVE-2020-27786: Fixed a use after free in kernel midi subsystem snd_rawmidi_kernel_read1() (bsc#1179601).
• CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).
• CVE-2020-28941: Fixed an issue where local attackers on systems with the speakup driver could cause a local denial of service attack (bsc#1178740).
• CVE-2020-29369: Fixed a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe (bnc#1173504 bsc#1179432).
• CVE-2020-29371: Fixed uninitialized memory leaks to userspace (bsc#1179429).
• CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).

The following non-security bugs were fixed:

• ACPI: APEI: Kick the memory_failure() queue for synchronous errors (jsc#SLE-16610).
• ACPI: button: Add DMI quirk for Medion Akoya E2228T (git-fixes).
• ACPICA: Add NHLT table signature (bsc#1176200).
• Add bug reference to two hv_netvsc patches (bsc#1178853).
• ALSA: ctl: fix error path at adding user-defined element set (git-fixes).
• ALSA: firewire: Clean up a locking issue in copy_resp_to_buf() (git-fixes).
• ALSA: hda: fix jack detection with Realtek codecs when in D3 (git-fixes).
• ALSA: hda/generic: Add option to enforce preferred_dacs pairs (git-fixes).
• ALSA: hda/realtek: Add mute LED quirk to yet another HP x360 model (git-fixes).
• ALSA: hda/realtek - Add new codec supported for ALC897 (git-fixes).
• ALSA: hda/realtek: Add some Clove SSID in the ALC293(ALC1220) (git-fixes).
• ALSA: hda/realtek - Add supported for Lenovo ThinkPad Headset Button (git-fixes).
• ALSA: hda/realtek - Add supported mute Led for HP (git-fixes).
• ALSA: hda/realtek: Enable headset of ASUS UX482EG & B9400CEA with ALC294 (git-fixes).
• ALSA: hda/realtek: Fix bass speaker DAC assignment on Asus Zephyrus G14 (git-fixes).
• ALSA: hda/realtek - Fixed Dell AIO wrong sound tone (git-fixes).
• ALSA: hda/realtek - HP Headset Mic can't detect after boot (git-fixes).
• ALSA: hda: Reinstate runtime_allow() for all hda controllers (git-fixes).
• ALSA: mixart: Fix mutex deadlock (git-fixes).
• ALSA: usb-audio: Add delay quirk for all Logitech USB devices (git-fixes).
• ALSA: usb-audio: Convert to the common vmalloc memalloc (bsc#1178203).
• ALSA: usb-audio: Correct wrongly matching entries with audio class (bsc#1178203).
• ALSA: usb-audio: Move device rename and profile quirks to an internal table (bsc#1178203).
• ALSA: usb-audio: Properly match with audio interface class (bsc#1178203).
• ALSA: usb-audio: Simplify quirk entries with a macro (bsc#1178203).
• ALSA: usb-audio: Support PCM sync_stop (bsc#1178203).
• ALSA: usb-audio: US16x08: fix value…

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

The following security bugs were fixed:

• CVE-2018-20669: Fixed an improper check i915_gem_execbuffer2_ioctl in drivers/gpu/drm/i915/i915_gem_execbuffer.c (bsc#1122971).
• CVE-2019-20934: Fixed a use-after-free in show_numa_stats() because NUMA fault statistics were inappropriately freed, aka CID-16d51a590a8c (bsc#1179663).
• CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
• CVE-2020-15437: Fixed a null pointer dereference which could have allowed local users to cause a denial of service(bsc#1179140).
• CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).
• CVE-2020-27777: Restrict RTAS requests from userspace (bsc#1179107)
• CVE-2020-27786: Fixed a use after free in kernel midi subsystem snd_rawmidi_kernel_read1() (bsc#1179601).
• CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).
• CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have been used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095 (bsc#1178589).
• CVE-2020-29371: Fixed uninitialized memory leaks to userspace (bsc#1179429).
• CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).

The following non-security bugs were fixed:

• ACPI: GED: fix -Wformat (git-fixes).
• ALSA: ctl: fix error path at adding user-defined element set (git-fixes).
• ALSA: firewire: Clean up a locking issue in copy_resp_to_buf() (git-fixes).
• ALSA: hda/realtek: Add mute LED quirk to yet another HP x360 model (git-fixes).
• ALSA: hda/realtek - Add new codec supported for ALC897 (git-fixes).
• ALSA: hda/realtek: Add some Clove SSID in the ALC293(ALC1220) (git-fixes).
• ALSA: hda/realtek: Enable headset of ASUS UX482EG & B9400CEA with ALC294 (git-fixes).
• ALSA: mixart: Fix mutex deadlock (git-fixes).
• ALSA: usb-audio: US16x08: fix value count for level meters (git-fixes).
• arm64: KVM: Fix system register enumeration (bsc#1174726).
• arm/arm64: KVM: Add PSCI version selection API (bsc#1174726).
• ASoC: qcom: lpass-platform: Fix memory leak (git-fixes).
• ath10k: Acquire tx_lock in tx error paths (git-fixes).
• Avoid a GCC warning about '/*' within a comment.
• batman-adv: set .owner to THIS_MODULE (git-fixes).
• Bluetooth: btusb: Fix and detect most of the Chinese Bluetooth controllers (git-fixes).
• Bluetooth: hci_bcm: fix freeing not-requested IRQ (git-fixes).
• bnxt_en: Fix race when modifying pause settings (bsc#1050242 ).
• bnxt_en: Protect bnxt_set_eee() and bnxt_set_pauseparam() with mutex (bsc#1050242).
• bpf: Zero-fill re-used per-cpu map element (git-fixes).
• btrfs: account ticket size at add/delete time (bsc#1178897).
• btrfs: add helper to obtain number of devices with ongoing dev-replace (bsc#1178897).
• btrfs: check rw_devices, not num_devices for balance (bsc#1178897).
• btrfs: do not delete mismatched root refs (bsc#1178962).
• btrfs: fix btrfs_calc_reclaim_metadata_size calculation (bsc#1178897).
• btrfs: fix force usage in inc_block_group_ro (bsc#1178897).
• btrfs: fix invalid removal of root ref (bsc#1178962).
• btrfs: fix reclaim counter leak of space_info objects (bsc#1178897).
• btrfs: fix reclaim_size counter leak after stealing from global reserve (bsc#1178897).
• btrfs: kill min_allocable_bytes in inc_block_group_ro (bsc#1178897).
• btrfs: qgroup: do not commit transaction when we already hold the handle (bsc#1178634).
• btrfs: rework arguments of btrfs_unlink_subvol (bsc#1178962).
• btrfs: split dev-replace locking helpers for read and write (bsc#1178897).
• can: af_can: prevent potential access of uninitialized…

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

The following security bugs were fixed:

• CVE-2018-20669: Fixed an improper check i915_gem_execbuffer2_ioctl in drivers/gpu/drm/i915/i915_gem_execbuffer.c (bsc#1122971).
• CVE-2019-20934: Fixed a use-after-free in show_numa_stats() because NUMA fault statistics were inappropriately freed, aka CID-16d51a590a8c (bsc#1179663).
• CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
• CVE-2020-15437: Fixed a null pointer dereference which could have allowed local users to cause a denial of service(bsc#1179140).
• CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).
• CVE-2020-27777: Restrict RTAS requests from userspace (bsc#1179107)
• CVE-2020-27786: Fixed a use after free in kernel midi subsystem snd_rawmidi_kernel_read1() (bsc#1179601).
• CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).
• CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have been used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095 (bsc#1178589).
• CVE-2020-29371: Fixed uninitialized memory leaks to userspace (bsc#1179429).
• CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).

The following non-security bugs were fixed:

• ACPI: GED: fix -Wformat (git-fixes).
• ALSA: ctl: fix error path at adding user-defined element set (git-fixes).
• ALSA: firewire: Clean up a locking issue in copy_resp_to_buf() (git-fixes).
• ALSA: hda/realtek: Add mute LED quirk to yet another HP x360 model (git-fixes).
• ALSA: hda/realtek - Add new codec supported for ALC897 (git-fixes).
• ALSA: hda/realtek: Add some Clove SSID in the ALC293(ALC1220) (git-fixes).
• ALSA: hda/realtek: Enable headset of ASUS UX482EG & B9400CEA with ALC294 (git-fixes).
• ALSA: mixart: Fix mutex deadlock (git-fixes).
• ALSA: usb-audio: US16x08: fix value count for level meters (git-fixes).
• arm64: KVM: Fix system register enumeration (bsc#1174726).
• arm/arm64: KVM: Add PSCI version selection API (bsc#1174726).
• ASoC: qcom: lpass-platform: Fix memory leak (git-fixes).
• ath10k: Acquire tx_lock in tx error paths (git-fixes).
• Avoid a GCC warning about '/*' within a comment.
• batman-adv: set .owner to THIS_MODULE (git-fixes).
• Bluetooth: btusb: Fix and detect most of the Chinese Bluetooth controllers (git-fixes).
• Bluetooth: hci_bcm: fix freeing not-requested IRQ (git-fixes).
• bnxt_en: Fix race when modifying pause settings (bsc#1050242 ).
• bnxt_en: Protect bnxt_set_eee() and bnxt_set_pauseparam() with mutex (bsc#1050242).
• btmrvl: Fix firmware filename for sd8997 chipset (bsc#1172694).
• btrfs: account ticket size at add/delete time (bsc#1178897).
• btrfs: add helper to obtain number of devices with ongoing dev-replace (bsc#1178897).
• btrfs: check rw_devices, not num_devices for balance (bsc#1178897).
• btrfs: do not delete mismatched root refs (bsc#1178962).
• btrfs: fix btrfs_calc_reclaim_metadata_size calculation (bsc#1178897).
• btrfs: fix force usage in inc_block_group_ro (bsc#1178897).
• btrfs: fix invalid removal of root ref (bsc#1178962).
• btrfs: fix reclaim counter leak of space_info objects (bsc#1178897).
• btrfs: fix reclaim_size counter leak after stealing from global reserve (bsc#1178897).
• btrfs: kill min_allocable_bytes in inc_block_group_ro (bsc#1178897).
• btrfs: qgroup: do not commit transaction when we already hold the handle (bsc#1178634).
• btrfs: rework arguments of btrfs_unlink_subvol (bsc#1178962).
• btrfs: split dev-replace locking helpers for read and write (bsc#1178897).
• can: af_can: prevent potential access of…

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

The following security bugs were fixed:

• CVE-2019-20934: Fixed a use-after-free in show_numa_stats() because NUMA fault statistics were inappropriately freed, aka CID-16d51a590a8c (bsc#1179663).
• CVE-2020-0444: Fixed a bad kfree due to a logic error in audit_data_to_entry (bnc#1180027).
• CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c that could have led to local privilege escalation (bnc#1180029).
• CVE-2020-0466: Fixed a use-after-free due to a logic error in do_epoll_ctl and ep_loop_check_proc of eventpoll.c (bnc#1180031).
• CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).
• CVE-2020-11668: Fixed an out of bounds write to the heap in drivers/media/usb/gspca/xirlink_cit.c (aka the Xirlink camera USB driver) caused by mishandling invalid descriptors (bsc#1168952).
• CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
• CVE-2020-27068: Fixed an out-of-bounds read due to a missing bounds check in the nl80211_policy policy of nl80211.c (bnc#1180086).
• CVE-2020-27777: Fixed a privilege escalation in the Run-Time Abstraction Services (RTAS) interface, affecting guests running on top of PowerVM or KVM hypervisors (bnc#1179107).
• CVE-2020-27786: Fixed an out-of-bounds write in the MIDI implementation (bnc#1179601).
• CVE-2020-27825: Fixed a race in the trace_open and buffer resize calls (bsc#1179960).
• CVE-2020-29371: Fixed uninitialized memory leaks to userspace (bsc#1179429).
• CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may have allowed a read-after-free attack against TIOCGSID (bnc#1179745).
• CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a use-after-free attack against TIOCSPGRP (bsc#1179745).

The following non-security bugs were fixed:

• ACPI: PNP: compare the string length in the matching_id() (git-fixes).
• ACPICA: Disassembler: create buffer fields in ACPI_PARSE_LOAD_PASS1 (git-fixes).
• ACPICA: Do not increment operation_region reference counts for field units (git-fixes).
• ALSA: ca0106: fix error code handling (git-fixes).
• ALSA: ctl: allow TLV read operation for callback type of element in locked case (git-fixes).
• ALSA: hda - Fix silent audio output and corrupted input on MSI X570-A PRO (git-fixes).
• ALSA: hda/ca0132 - Change Input Source enum strings (git-fixes).
• ALSA: hda/ca0132 - Fix AE-5 rear headphone pincfg (git-fixes).
• ALSA: hda/generic: Add option to enforce preferred_dacs pairs (git-fixes).
• ALSA: hda/hdmi: always check pin power status in i915 pin fixup (git-fixes).
• ALSA: hda/realtek - Add new codec supported for ALC897 (git-fixes).
• ALSA: hda/realtek - Couldn't detect Mic if booting with headset plugged (git-fixes).
• ALSA: hda/realtek - Enable headset mic of ASUS Q524UQK with ALC255 (git-fixes).
• ALSA: hda/realtek: Add mute LED quirk to yet another HP x360 model (git-fixes).
• ALSA: hda/realtek: Add some Clove SSID in the ALC293(ALC1220) (git-fixes).
• ALSA: hda/realtek: Enable front panel headset LED on Lenovo ThinkStation P520 (git-fixes).
• ALSA: hda/realtek: Enable headset of ASUS UX482EG & B9400CEA with ALC294 (git-fixes).
• ALSA: hda: Add NVIDIA codec IDs 9a & 9d through a0 to patch table (git-fixes).
• ALSA: hda: Fix potential race in unsol event handler (git-fixes).
• ALSA: hda: Fix regressions on clear and reconfig sysfs (git-fixes).
• ALSA: info: Drop WARN_ON() from buffer NULL sanity check (git-fixes).
• ALSA: isa/wavefront: prevent out of bounds write in ioctl (git-fixes).
• ALSA: line6: Perform sanity check for each URB creation (git-fixes).
• ALSA: pcm: oss: Fix a few more UBSAN fixes (git-fixes).
• ALSA: pcm: oss: Fix potential…

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

The following security bugs were fixed:

• CVE-2018-20669: Fixed an improper check i915_gem_execbuffer2_ioctl in drivers/gpu/drm/i915/i915_gem_execbuffer.c (bsc#1122971).
• CVE-2019-20934: Fixed a use-after-free in show_numa_stats() because NUMA fault statistics were inappropriately freed, aka CID-16d51a590a8c (bsc#1179663).
• CVE-2020-0444: Fixed a bad kfree due to a logic error in audit_data_to_entry (bnc#1180027).
• CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c that could have led to local privilege escalation (bnc#1180029).
• CVE-2020-0466: Fixed a use-after-free due to a logic error in do_epoll_ctl and ep_loop_check_proc of eventpoll.c (bnc#1180031).
• CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).
• CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
• CVE-2020-27068: Fixed an out-of-bounds read due to a missing bounds check in the nl80211_policy policy of nl80211.c (bnc#1180086).
• CVE-2020-27777: Fixed a privilege escalation in the Run-Time Abstraction Services (RTAS) interface, affecting guests running on top of PowerVM or KVM hypervisors (bnc#1179107).
• CVE-2020-27786: Fixed an out-of-bounds write in the MIDI implementation (bnc#1179601).
• CVE-2020-27825: Fixed a race in the trace_open and buffer resize calls (bsc#1179960).
• CVE-2020-29371: Fixed uninitialized memory leaks to userspace (bsc#1179429).
• CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may have allowed a read-after-free attack against TIOCGSID (bnc#1179745).
• CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a use-after-free attack against TIOCSPGRP (bsc#1179745).

The following non-security bugs were fixed:

• ALSA: hda/ca0132 - Change Input Source enum strings (git-fixes).
• ALSA: hda/ca0132 - Fix AE-5 rear headphone pincfg (git-fixes).
• ALSA: hda/realtek - Add new codec supported for ALC897 (git-fixes).
• ALSA: hda/realtek: Add mute LED quirk to yet another HP x360 model (git-fixes).
• ALSA: hda/realtek: Add some Clove SSID in the ALC293(ALC1220) (git-fixes).
• ALSA: hda/realtek: Enable headset of ASUS UX482EG & B9400CEA with ALC294 (git-fixes).
• ALSA: hda: Fix regressions on clear and reconfig sysfs (git-fixes).
• ALSA: usb-audio: US16x08: fix value count for level meters (git-fixes).
• ASoC: arizona: Fix a wrong free in wm8997_probe (git-fixes).
• ASoC: cx2072x: Fix doubly definitions of Playback and Capture streams (git-fixes).
• ASoC: jz4740-i2s: add missed checks for clk_get() (git-fixes).
• ASoC: pcm: DRAIN support reactivation (git-fixes).
• ASoC: wm8998: Fix PM disable depth imbalance on error (git-fixes).
• ASoC: wm_adsp: remove 'ctl' from list on error in wm_adsp_create_control() (git-fixes).
• ath10k: Fix an error handling path (git-fixes).
• ath10k: Release some resources in an error handling path (git-fixes).
• ath10k: Remove msdu from idr when management pkt send fails (git-fixes).
• ath6kl: fix enum-conversion warning (git-fixes).
• Avoid a GCC warning about '/*' within a comment.
• Bluetooth: btusb: Fix detection of some fake CSR controllers with a bcdDevice val of 0x0134 (git-fixes).
• Bluetooth: Fix null pointer dereference in hci_event_packet() (git-fixes).
• Bluetooth: Fix slab-out-of-bounds read in hci_le_direct_adv_report_evt() (git-fixes).
• bnxt_en: Fix race when modifying pause settings (bsc#1050242 ).
• bnxt_en: Protect bnxt_set_eee() and bnxt_set_pauseparam() with mutex (bsc#1050242).
• btmrvl: Fix firmware filename for sd8997 chipset (bsc#1172694).
• btrfs: fix use-after-free on readahead extent after failure to create it (bsc#1179963).
• btrfs: qgroup: do not commit transaction…

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

The following security bugs were fixed:

• CVE-2020-28374: Fixed a Linux SCSI target issue (bsc#1178372).
• CVE-2020-36158: Fixed a potential remote code execution in the Marvell mwifiex driver (bsc#1180559).
• CVE-2020-27825: Fixed a race in the trace_open and buffer resize calls (bsc#1179960).
• CVE-2020-0466: Fixed a use-after-free due to a logic error in do_epoll_ctl and ep_loop_check_proc of eventpoll.c (bnc#1180031).
• CVE-2020-27068: Fixed an out-of-bounds read due to a missing bounds check in the nl80211_policy policy of nl80211.c (bnc#1180086).
• CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c that could have led to local privilege escalation (bnc#1180029).
• CVE-2020-0444: Fixed a bad kfree due to a logic error in audit_data_to_entry (bnc#1180027).
• CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may have allowed a read-after-free attack against TIOCGSID (bnc#1179745).
• CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a use-after-free attack against TIOCSPGRP (bsc#1179745).
• CVE-2020-27777: Fixed a privilege escalation in the Run-Time Abstraction Services (RTAS) interface, affecting guests running on top of PowerVM or KVM hypervisors (bnc#1179107).
• CVE-2019-20934: Fixed a use-after-free in show_numa_stats() because NUMA fault statistics were inappropriately freed, aka CID-16d51a590a8c (bsc#1179663).
• CVE-2020-27786: Fixed a use after free in kernel midi subsystem snd_rawmidi_kernel_read1() (bsc#1179601).

The following non-security bugs were fixed:

• ACPI: PNP: compare the string length in the matching_id() (git-fixes).
• ACPICA: Disassembler: create buffer fields in ACPI_PARSE_LOAD_PASS1 (git-fixes).
• ACPICA: Do not increment operation_region reference counts for field units (git-fixes).
• ALSA: ca0106: fix error code handling (git-fixes).
• ALSA: ctl: allow TLV read operation for callback type of element in locked case (git-fixes).
• ALSA: hda - Fix silent audio output and corrupted input on MSI X570-A PRO (git-fixes).
• ALSA: hda/ca0132 - Change Input Source enum strings (git-fixes).
• ALSA: hda/ca0132 - Fix AE-5 rear headphone pincfg (git-fixes).
• ALSA: hda/generic: Add option to enforce preferred_dacs pairs (git-fixes).
• ALSA: hda/hdmi: always check pin power status in i915 pin fixup (git-fixes).
• ALSA: hda/realtek - Add new codec supported for ALC897 (git-fixes).
• ALSA: hda/realtek - Couldn't detect Mic if booting with headset plugged (git-fixes).
• ALSA: hda/realtek - Enable headset mic of ASUS Q524UQK with ALC255 (git-fixes).
• ALSA: hda/realtek: Add mute LED quirk to yet another HP x360 model (git-fixes).
• ALSA: hda/realtek: Add some Clove SSID in the ALC293(ALC1220) (git-fixes).
• ALSA: hda/realtek: Enable front panel headset LED on Lenovo ThinkStation P520 (git-fixes).
• ALSA: hda/realtek: Enable headset of ASUS UX482EG & B9400CEA with ALC294 (git-fixes).
• ALSA: hda: Add NVIDIA codec IDs 9a & 9d through a0 to patch table (git-fixes).
• ALSA: hda: Fix potential race in unsol event handler (git-fixes).
• ALSA: hda: Fix regressions on clear and reconfig sysfs (git-fixes).
• ALSA: info: Drop WARN_ON() from buffer NULL sanity check (git-fixes).
• ALSA: isa/wavefront: prevent out of bounds write in ioctl (git-fixes).
• ALSA: line6: Perform sanity check for each URB creation (git-fixes).
• ALSA: pcm: oss: Fix a few more UBSAN fixes (git-fixes).
• ALSA: pcm: oss: Fix potential out-of-bounds shift (git-fixes).
• ALSA: pcm: oss: Remove superfluous WARN_ON() for mulaw sanity check (git-fixes).
• ALSA: timer: Limit max amount of slave instances (git-fixes).
• ALSA: usb-audio: Add delay quirk for all Logitech USB devices (git-fixes).
• ALSA: usb-audio: Add delay quirk for H570e USB headsets (git-fixes).
• ALSA: usb-audio: Add implicit feedback quirk for MODX (git-fixes).
• ALSA: usb-audio: Add implicit feedback quirk for Qu-16 (git-fixes).…

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

The following security bugs were fixed:

• CVE-2020-28374: Fixed a LIO security issue (bsc#1178372).
• CVE-2020-36158: Fixed a potential remote code execution in the Marvell mwifiex driver (bsc#1180559).
• CVE-2020-27825: Fixed a race in the trace_open and buffer resize calls (bsc#1179960).
• CVE-2020-0466: Fixed a use-after-free due to a logic error in do_epoll_ctl and ep_loop_check_proc of eventpoll.c (bnc#1180031).
• CVE-2020-27068: Fixed an out-of-bounds read due to a missing bounds check in the nl80211_policy policy of nl80211.c (bnc#1180086).
• CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c that could have led to local privilege escalation (bnc#1180029).
• CVE-2020-0444: Fixed a bad kfree due to a logic error in audit_data_to_entry (bnc#1180027).
• CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may have allowed a read-after-free attack against TIOCGSID (bnc#1179745).
• CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a use-after-free attack against TIOCSPGRP (bsc#1179745).
• CVE-2020-27777: Fixed a privilege escalation in the Run-Time Abstraction Services (RTAS) interface, affecting guests running on top of PowerVM or KVM hypervisors (bnc#1179107).
• CVE-2019-20934: Fixed a use-after-free in show_numa_stats() because NUMA fault statistics were inappropriately freed, aka CID-16d51a590a8c (bsc#1179663).
• CVE-2020-27786: Fixed a use after free in kernel midi subsystem snd_rawmidi_kernel_read1() (bsc#1179601).
• CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).
• CVE-2018-20669: Fixed an improper check i915_gem_execbuffer2_ioctl in drivers/gpu/drm/i915/i915_gem_execbuffer.c (bsc#1122971).

The following non-security bugs were fixed:

• ACPI: PNP: compare the string length in the matching_id() (git-fixes).
• ACPICA: Disassembler: create buffer fields in ACPI_PARSE_LOAD_PASS1 (git-fixes).
• ACPICA: Do not increment operation_region reference counts for field units (git-fixes).
• ALSA: ca0106: fix error code handling (git-fixes).
• ALSA: ctl: allow TLV read operation for callback type of element in locked case (git-fixes).
• ALSA: hda - Fix silent audio output and corrupted input on MSI X570-A PRO (git-fixes).
• ALSA: hda/ca0132 - Change Input Source enum strings (git-fixes).
• ALSA: hda/ca0132 - Fix AE-5 rear headphone pincfg (git-fixes).
• ALSA: hda/generic: Add option to enforce preferred_dacs pairs (git-fixes).
• ALSA: hda/hdmi: always check pin power status in i915 pin fixup (git-fixes).
• ALSA: hda/realtek - Add new codec supported for ALC897 (git-fixes).
• ALSA: hda/realtek - Couldn't detect Mic if booting with headset plugged (git-fixes).
• ALSA: hda/realtek - Enable headset mic of ASUS Q524UQK with ALC255 (git-fixes).
• ALSA: hda/realtek: Add mute LED quirk to yet another HP x360 model (git-fixes).
• ALSA: hda/realtek: Add some Clove SSID in the ALC293(ALC1220) (git-fixes).
• ALSA: hda/realtek: Enable front panel headset LED on Lenovo ThinkStation P520 (git-fixes).
• ALSA: hda/realtek: Enable headset of ASUS UX482EG & B9400CEA with ALC294 (git-fixes).
• ALSA: hda: Add NVIDIA codec IDs 9a & 9d through a0 to patch table (git-fixes).
• ALSA: hda: Fix potential race in unsol event handler (git-fixes).
• ALSA: hda: Fix regressions on clear and reconfig sysfs (git-fixes).
• ALSA: info: Drop WARN_ON() from buffer NULL sanity check (git-fixes).
• ALSA: isa/wavefront: prevent out of bounds write in ioctl (git-fixes).
• ALSA: line6: Perform sanity check for each URB creation (git-fixes).
• ALSA: pcm: oss: Fix a few more UBSAN fixes (git-fixes).
• ALSA: pcm: oss: Fix potential out-of-bounds shift (git-fixes).
• ALSA: pcm: oss: Remove superfluous WARN_ON() for mulaw sanity check (git-fixes).
• ALSA: timer: Limit max…

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

The following security bugs were fixed:

• CVE-2021-3348: Fixed a use-after-free in nbd_add_socket() that could be triggered by local attackers (with access to the nbd device) via an I/O request (bnc#1181504).
• CVE-2021-3347: A use-after-free was discovered in the PI futexes during fault handling, allowing local users to execute code in the kernel (bnc#1181349).
• CVE-2020-27835: A use-after-free in the infiniband hfi1 driver was found, specifically in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system (bnc#1179878).
• CVE-2020-25211: Fixed a buffer overflow in ctnetlink_parse_tuple_filter() which could be triggered by a local attackers by injecting conntrack netlink configuration (bnc#1176395).
• CVE-2020-25639: Fixed a NULL pointer dereference via nouveau ioctl (bnc#1176846).
• CVE-2020-29569: Fixed a potential privilege escalation and information leaks related to the PV block backend, as used by Xen (bnc#1179509).
• CVE-2020-29568: Fixed a denial of service issue, related to processing watch events (bnc#1179508).
• CVE-2020-0444: Fixed a bad kfree due to a logic error in audit_data_to_entry (bnc#1180027).
• CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c that could have led to local privilege escalation (bnc#1180029).
• CVE-2020-0466: Fixed a use-after-free due to a logic error in do_epoll_ctl and ep_loop_check_proc of eventpoll.c (bnc#1180031).
• CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).
• CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
• CVE-2020-27068: Fixed an out-of-bounds read due to a missing bounds check in the nl80211_policy policy of nl80211.c (bnc#1180086).
• CVE-2020-27777: Fixed a privilege escalation in the Run-Time Abstraction Services (RTAS) interface, affecting guests running on top of PowerVM or KVM hypervisors (bnc#1179107).
• CVE-2020-27786: Fixed an out-of-bounds write in the MIDI implementation (bnc#1179601).
• CVE-2020-27825: Fixed a race in the trace_open and buffer resize calls (bsc#1179960).
• CVE-2020-29371: Fixed uninitialized memory leaks to userspace (bsc#1179429).
• CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may have allowed a read-after-free attack against TIOCGSID (bnc#1179745).
• CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a use-after-free attack against TIOCSPGRP (bsc#1179745).
• CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have been used by local attackers to read privileged information or potentially crash the kernel (bsc#1178589).
• CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).
• CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).
• CVE-2020-15437: Fixed a null pointer dereference which could have allowed local users to cause a denial of service(bsc#1179140).
• CVE-2020-36158: Fixed a potential remote code execution in the Marvell mwifiex driver (bsc#1180559).
• CVE-2020-28374: Fixed a Linux SCSI target issue (bsc#1178372).
• CVE-2019-20934: Fixed a use-after-free in show_numa_stats() because NUMA fault statistics were inappropriately freed (bsc#1179663).

The following non-security bugs were fixed:

• blk-mq: improve heavily contended tag case (bsc#1178198).
• debugfs_lookup(): switch to lookup_one_len_unlocked() (bsc#1171979).
• epoll: Keep a reference on files added to the check list (bsc#1180031).
• fix regression in 'epoll: Keep a reference on files added to the check list' (bsc#1180031, git-fixes).
• futex: Do not enable IRQs…

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

The following security bugs were fixed:

• CVE-2021-3348: Fixed a use-after-free in nbd_add_socket that could be triggered by local attackers (with access to the nbd device) via an I/O request at a certain point during device setup (bnc#1181504).
• CVE-2021-3347: A use-after-free was discovered in the PI futexes during fault handling, allowing local users to execute code in the kernel (bnc#1181349).
• CVE-2020-25211: Fixed a buffer overflow in ctnetlink_parse_tuple_filter() which could be triggered by a local attackers by injecting conntrack netlink configuration (bnc#1176395).
• CVE-2020-27835: A use-after-free in the infiniband hfi1 driver was found, specifically in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system (bnc#1179878).
• CVE-2020-29569: Fixed a potential privilege escalation and information leaks related to the PV block backend, as used by Xen (bnc#1179509).
• CVE-2020-29568: Fixed a denial of service issue, related to processing watch events (bnc#1179508).
• CVE-2020-0444: Fixed a bad kfree due to a logic error in audit_data_to_entry (bnc#1180027).
• CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c that could have led to local privilege escalation (bnc#1180029).
• CVE-2020-0466: Fixed a use-after-free due to a logic error in do_epoll_ctl and ep_loop_check_proc of eventpoll.c (bnc#1180031).
• CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).
• CVE-2020-10781: A flaw was found in the ZRAM kernel module, where a user with a local account and the ability to read the /sys/class/zram-control/hot_add file can create ZRAM device nodes in the /dev/ directory. This read allocates kernel memory and is not accounted for a user that triggers the creation of that ZRAM device. With this vulnerability, continually reading the device may consume a large amount of system memory and cause the Out-of-Memory (OOM) killer to activate and terminate random userspace processes, possibly making the system inoperable (bnc#1173074).
• CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
• CVE-2020-27068: Fixed an out-of-bounds read due to a missing bounds check in the nl80211_policy policy of nl80211.c (bnc#1180086).
• CVE-2020-25639: Fixed a NULL pointer dereference via nouveau ioctl (bnc#1176846).
• CVE-2020-27777: Fixed a privilege escalation in the Run-Time Abstraction Services (RTAS) interface, affecting guests running on top of PowerVM or KVM hypervisors (bnc#1179107).
• CVE-2020-27786: Fixed an out-of-bounds write in the MIDI implementation (bnc#1179601).
• CVE-2020-27825: Fixed a race in the trace_open and buffer resize calls (bsc#1179960).
• CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may have allowed a read-after-free attack against TIOCGSID (bnc#1179745).
• CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a use-after-free attack against TIOCSPGRP (bsc#1179745).
• CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have been used by local attackers to read privileged information or potentially crash the kernel (bsc#1178589).
• CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).
• CVE-2020-28374: Fixed a Linux SCSI target issue (bsc#1178372).
• CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).
• CVE-2020-29371: An issue was discovered in romfs_dev_read in fs/romfs/storage.c where uninitialized memory leaks to userspace (bnc#1179429).
• CVE-2020-15437: Fixed a null pointer dereference which could have allowed local…

The SUSE Linux Enterprise 12 SP3 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3347: A use-after-free was discovered in the PI futexes during fault handling, allowing local users to execute code in the kernel (bnc#1181349).
• CVE-2020-25211: Fixed a buffer overflow in ctnetlink_parse_tuple_filter() which could be triggered by a local attackers by injecting conntrack netlink configuration (bnc#1176395).
• CVE-2020-27835: A use-after-free in the infiniband hfi1 driver was found, specifically in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system (bnc#1179878).
• CVE-2020-29569: Fixed a potential privilege escalation and information leaks related to the PV block backend, as used by Xen (bnc#1179509).
• CVE-2020-29568: Fixed a denial of service issue, related to processing watch events (bnc#1179508).
• CVE-2020-0444: Fixed a bad kfree due to a logic error in audit_data_to_entry (bnc#1180027).
• CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c that could have led to local privilege escalation (bnc#1180029).
• CVE-2020-0466: Fixed a use-after-free due to a logic error in do_epoll_ctl and ep_loop_check_proc of eventpoll.c (bnc#1180031).
• CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).
• CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
• CVE-2020-27068: Fixed an out-of-bounds read due to a missing bounds check in the nl80211_policy policy of nl80211.c (bnc#1180086).
• CVE-2020-27777: Fixed a privilege escalation in the Run-Time Abstraction Services (RTAS) interface, affecting guests running on top of PowerVM or KVM hypervisors (bnc#1179107).
• CVE-2020-27786: Fixed an out-of-bounds write in the MIDI implementation (bnc#1179601).
• CVE-2020-27825: Fixed a race in the trace_open and buffer resize calls (bsc#1179960).
• CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may have allowed a read-after-free attack against TIOCGSID (bnc#1179745).
• CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a use-after-free attack against TIOCSPGRP (bsc#1179745).
• CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have been used by local attackers to read privileged information or potentially crash the kernel (bsc#1178589).
• CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).
• CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).
• CVE-2020-15437: Fixed a null pointer dereference which could have allowed local users to cause a denial of service(bsc#1179140).
• CVE-2020-36158: Fixed a potential remote code execution in the Marvell mwifiex driver (bsc#1180559).
• CVE-2020-11668: Fixed the mishandling of invalid descriptors in the Xirlink camera USB driver (bnc#1168952).
• CVE-2020-25285: Fixed a race condition between hugetlb sysctl handlers in mm/hugetlb.c (bnc#1176485).
• CVE-2019-20934: Fixed a use-after-free in show_numa_stats() because NUMA fault statistics were inappropriately freed (bsc#1179663).
• CVE-2018-10902: It was found that the raw midi kernel driver did not protect against concurrent access which leads to a double realloc (double free) in snd_rawmidi_input_params() and snd_rawmidi_output_status() which are part of snd_rawmidi_ioctl() handler in rawmidi.c file. A malicious local attacker could possibly use this for privilege escalation (bnc#1105322).

The following non-security bugs were fixed:

• cifs: do not revalidate mountpoint dentries (bsc#1177440).
• cifs: fix potential use-after-free in cifs_echo_request() (bsc#1139944).
• cifs: ignore…

The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3347: A use-after-free was discovered in the PI futexes during fault handling, allowing local users to execute code in the kernel (bnc#1181349).
• CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c that could have led to local privilege escalation (bnc#1180029).
• CVE-2020-25211: Fixed a flaw where a local attacker was able to inject conntrack netlink configuration that could cause a denial of service or trigger the use of incorrect protocol numbers in ctnetlink_parse_tuple_filter (bnc#1176395).
• CVE-2020-14390: Fixed an out-of-bounds memory write leading to memory corruption or a denial of service when changing screen size (bnc#1176235).
• CVE-2020-25284: Fixed an incomplete permission checking for access to rbd devices, which could have been leveraged by local attackers to map or unmap rbd block devices (bsc#1176482).
• CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
• CVE-2020-14331: Fixed a missing check in vgacon scrollback handling (bsc#1174205).
• CVE-2020-14353: Fixed an issue where keys - for keyctl prevent creating a different user's keyrings (bsc#1174993).
• CVE-2020-14381: Fixed requeue paths such that filp was valid when dropping the references (bsc#1176011).
• CVE-2020-27068: Fixed an out-of-bounds read due to a missing bounds check in the nl80211_policy policy of nl80211.c (bnc#1180086).
• CVE-2020-27777: Fixed a privilege escalation in the Run-Time Abstraction Services (RTAS) interface, affecting guests running on top of PowerVM or KVM hypervisors (bnc#1179107).
• CVE-2020-27786: Fixed an out-of-bounds write in the MIDI implementation (bnc#1179601).
• CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may have allowed a read-after-free attack against TIOCGSID (bnc#1179745).
• CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a use-after-free attack against TIOCSPGRP (bsc#1179745).
• CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have been used by local attackers to read privileged information or potentially crash the kernel (bsc#1178589).
• CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).
• CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).
• CVE-2020-25285: A race condition between hugetlb sysctl handlers in mm/hugetlb.c could be used by local attackers to corrupt memory, cause a NULL pointer dereference, or possibly have unspecified other impact (bnc#1176485 ).
• CVE-2020-15437: Fixed a null pointer dereference which could have allowed local users to cause a denial of service (bsc#1179140).
• CVE-2020-36158: Fixed a potential remote code execution in the Marvell mwifiex driver (bsc#1180559).
• CVE-2020-11668: Fixed the mishandling of invalid descriptors in the Xirlink camera USB driver (bnc#1168952).
• CVE-2020-25668: Fixed a use-after-free in con_font_op() (bsc#1178123).
• CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).
• CVE-2020-0431: Fixed an out of bounds write due to a missing bounds check (bsc#1176722).
• CVE-2020-0404: Fixed a linked list corruption due to an unusual root cause (bsc#1176423).
• CVE-2019-20934: Fixed a use-after-free in show_numa_stats() because NUMA fault statistics were inappropriately freed (bsc#1179663).
• CVE-2020-25656: Fixed a concurrency use-after-free in vt_do_kdgkb_ioctl (bnc#1177766).
• CVE-2020-25643: Fixed a memory corruption and a read overflow which could have caused by improper input validation in the ppp_cp_parse_cr function (bsc#1177206). -…

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 SP3 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-2021-31916: 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-2020-12655: An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c. Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767 (bnc#1171217).

• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).

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

• 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-2017-17862: kernel/bpf/verifier.c in the Linux kernel ignores unreachable code, even though it would still be processed by JIT compilers. This behavior, also considered an improper branch-pruning logic issue, could possibly be used by local users for denial of service (bnc#1073928).

• CVE-2017-17864: kernel/bpf/verifier.c in the Linux kernel mishandled states_equal comparisons between the pointer data type and the UNKNOWN_VALUE data type, which allowed local users to obtain potentially sensitive address information, aka a 'pointer leak (bnc#1073928).

• CVE-2021-20265: A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allowed an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability (bnc#1183089).

• 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-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-2021-3760: Fixed a use-after-free…

Elena Petrova discovered that the pin controller device tree implementation in the Linux kernel did not properly handle string references. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-0427)

Daniele Antonioli, Nils Ole Tippenhauer, and Kasper Rasmussen discovered that legacy pairing and secure-connections pairing authentication in the Bluetooth protocol could allow an unauthenticated user to complete authentication without pairing credentials via adjacent access. A physically proximate attacker could use this to impersonate a previously paired Bluetooth device. (CVE-2020-10135)

Andy Nguyen discovered that the Bluetooth A2MP implementation in the Linux kernel did not properly initialize memory in some situations. A physically proximate remote attacker could use this to expose sensitive information (kernel memory). (CVE-2020-12352)

It was discovered that a race condition existed in the perf subsystem of the Linux kernel, leading to a use-after-free vulnerability. An attacker with access to the perf subsystem could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-14351)

It was discovered that the frame buffer implementation in the Linux kernel did not properly handle some edge cases in software scrollback. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-14390)

It was discovered that the netfilter connection tracker for netlink in the Linux kernel did not properly perform bounds checking in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-25211)

It was discovered that the Rados block device (rbd) driver in the Linux kernel did not properly perform privilege checks for access to rbd devices in some situations. A local attacker could use this to map or unmap rbd block devices. (CVE-2020-25284)

It was discovered that the HDLC PPP implementation in the Linux kernel did not properly validate input in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-25643)

It was discovered that the GENEVE tunnel implementation in the Linux kernel when combined with IPSec did not properly select IP routes in some situations. An attacker could use this to expose sensitive information (unencrypted network traffic). (CVE-2020-25645)

Keyu Man discovered that the ICMP global rate limiter in the Linux kernel could be used to assist in scanning open UDP ports. A remote attacker could use to facilitate attacks on UDP based services that depend on source port randomization. (CVE-2020-25705)

It was discovered that the framebuffer implementation in the Linux kernel did not properly perform range checks in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-28915)

It was discovered that Power 9 processors could be coerced to expose information from the L1 cache in certain situations. A local attacker could use this to expose sensitive information. (CVE-2020-4788)

It was discovered that a race condition existed in the binder IPC implementation in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-0423)

Daniele Antonioli, Nils Ole Tippenhauer, and Kasper Rasmussen discovered that legacy pairing and secure-connections pairing authentication in the Bluetooth protocol could allow an unauthenticated user to complete authentication without pairing credentials via adjacent access. A physically proximate attacker could use this to impersonate a previously paired Bluetooth device. (CVE-2020-10135)

It was discovered that a race condition existed in the perf subsystem of the Linux kernel, leading to a use-after-free vulnerability. An attacker with access to the perf subsystem could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-14351)

It was discovered that the frame buffer implementation in the Linux kernel did not properly handle some edge cases in software scrollback. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-14390)

It was discovered that the netfilter connection tracker for netlink in the Linux kernel did not properly perform bounds checking in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-25211)

It was discovered that the Rados block device (rbd) driver in the Linux kernel did not properly perform privilege checks for access to rbd devices in some situations. A local attacker could use this to map or unmap rbd block devices. (CVE-2020-25284)

It was discovered that the HDLC PPP implementation in the Linux kernel did not properly validate input in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-25643)

It was discovered that the GENEVE tunnel implementation in the Linux kernel when combined with IPSec did not properly select IP routes in some situations. An attacker could use this to expose sensitive information (unencrypted network traffic). (CVE-2020-25645)

Keyu Man discovered that the ICMP global rate limiter in the Linux kernel could be used to assist in scanning open UDP ports. A remote attacker could use to facilitate attacks on UDP based services that depend on source port randomization. (CVE-2020-25705)

It was discovered that the framebuffer implementation in the Linux kernel did not properly perform range checks in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-28915)

It was discovered that Power 9 processors could be coerced to expose information from the L1 cache in certain situations. A local attacker could use this to expose sensitive information. (CVE-2020-4788)

It was discovered that a race condition existed in the perf subsystem of the Linux kernel, leading to a use-after-free vulnerability. An attacker with access to the perf subsystem could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-14351)

It was discovered that the frame buffer implementation in the Linux kernel did not properly handle some edge cases in software scrollback. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-14390)

It was discovered that the netfilter connection tracker for netlink in the Linux kernel did not properly perform bounds checking in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-25211)

It was discovered that the Rados block device (rbd) driver in the Linux kernel did not properly perform privilege checks for access to rbd devices in some situations. A local attacker could use this to map or unmap rbd block devices. (CVE-2020-25284)

It was discovered that a race condition existed in the hugetlb sysctl implementation in the Linux kernel. A privileged attacker could use this to cause a denial of service (system crash). (CVE-2020-25285)

It was discovered that the block layer subsystem in the Linux kernel did not properly handle zero-length requests. A local attacker could use this to cause a denial of service. (CVE-2020-25641)

It was discovered that the HDLC PPP implementation in the Linux kernel did not properly validate input in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-25643)

It was discovered that the GENEVE tunnel implementation in the Linux kernel when combined with IPSec did not properly select IP routes in some situations. An attacker could use this to expose sensitive information (unencrypted network traffic). (CVE-2020-25645)

It was discovered that the framebuffer implementation in the Linux kernel did not properly perform range checks in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-28915)

It was discovered that Power 9 processors could be coerced to expose information from the L1 cache in certain situations. A local attacker could use this to expose sensitive information. (CVE-2020-4788)

Ryan Hall discovered that the Intel 700 Series Ethernet Controllers driver in the Linux kernel did not properly deallocate memory in some conditions. A local attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-0148)

It was discovered that the console keyboard driver in the Linux kernel contained a race condition. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-25656)

Minh Yuan discovered that the tty driver in the Linux kernel contained race conditions when handling fonts. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2020-25668)

Jinoh Kang discovered that the Xen event channel infrastructure in the Linux kernel contained a race condition. An attacker in guest could possibly use this to cause a denial of service (dom0 crash). (CVE-2020-27675)

Minh Yuan discovered that the framebuffer console driver in the Linux kernel did not properly handle fonts in some conditions. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-28974)

It was discovered that Power 9 processors could be coerced to expose information from the L1 cache in certain situations. A local attacker could use this to expose sensitive information. (CVE-2020-4788)