CVE-2020-12770

An issue was discovered in the Linux kernel through 5.6.11. sg_write lacks an sg_remove_request call in a certain failure case, aka CID-83c6f2390040.

An issue was discovered in the Linux kernel through 5.6.11. sg_write lacks an sg_remove_request call in a certain failure case, aka CID-83c6f2390040.

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

Security Fix(es):

• kernel: use after free in the video driver leads to local privilege escalation (CVE-2019-9458)

• kernel: use-after-free in drivers/bluetooth/hci_ldisc.c (CVE-2019-15917)

• kernel: out-of-bounds access in function hclge_tm_schd_mode_vnet_base_cfg (CVE-2019-15925)

• kernel: memory leak in ccp_run_sha_cmd() (CVE-2019-18808)

• kernel: Denial Of Service in the __ipmi_bmc_register() (CVE-2019-19046)

• kernel: out-of-bounds write in ext4_xattr_set_entry (CVE-2019-19319)

• Kernel: kvm: OOB memory write via kvm_dev_ioctl_get_cpuid (CVE-2019-19332)

• kernel: use-after-free in ext4_put_super (CVE-2019-19447)

• kernel: a malicious USB device in the drivers/input/ff-memless.c leads to use-after-free (CVE-2019-19524)

• kernel: race condition caused by a malicious USB device in the USB character device driver layer (CVE-2019-19537)

• kernel: use-after-free in serial_ir_init_module() (CVE-2019-19543)

• kernel: use-after-free in __ext4_expand_extra_isize and ext4_xattr_set_entry (CVE-2019-19767)

• kernel: use-after-free in debugfs_remove (CVE-2019-19770)

• kernel: out-of-bounds write via crafted keycode table (CVE-2019-20636)

• kernel: possible use-after-free due to a race condition in cdev_get (CVE-2020-0305)

• kernel: out-of-bounds read in in vc_do_resize function (CVE-2020-8647)

• kernel: use-after-free in n_tty_receive_buf_common function (CVE-2020-8648)

• kernel: invalid read location in vgacon_invert_region function (CVE-2020-8649)

• kernel: uninitialized kernel data leak in userspace coredumps (CVE-2020-10732)

• kernel: SELinux netlink permission check bypass (CVE-2020-10751)

• kernel: out-of-bounds write in mpol_parse_str (CVE-2020-11565)

• kernel: mishandles invalid descriptors in drivers/media/usb/gspca/xirlink_cit.c (CVE-2020-11668)

• kernel: buffer overflow in mt76_add_fragment function (CVE-2020-12465)

• kernel: xdp_umem_reg in net/xdp/xdp_umem.c has an out-of-bounds write which could result in crash and data coruption (CVE-2020-12659)

• kernel: sg_write function lacks an sg_remove_request call in a certain failure case (CVE-2020-12770)

• kernel: possible to send arbitrary signals to a privileged (suidroot) parent process (CVE-2020-12826)

• kernel: referencing inode of removed superblock in get_futex_key() causes UAF (CVE-2020-14381)

• kernel: soft-lockups in iov_iter_copy_from_user_atomic() could result in DoS (CVE-2020-25641)

• kernel: kernel pointer leak due to WARN_ON statement in video driver leads to local information disclosure (CVE-2019-9455)

• kernel: null pointer dereference in dlpar_parse_cc_property (CVE-2019-12614)

• kernel: null-pointer dereference in drivers/net/fjes/fjes_main.c (CVE-2019-16231)

• kernel: null pointer dereference in drivers/scsi/qla2xxx/qla_os.c (CVE-2019-16233)

• kernel: memory leak in af9005_identify_state() function (CVE-2019-18809)

• kernel: A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() function (CVE-2019-19056)

• kernel: memory leak in the crypto_report() function (CVE-2019-19062)

• kernel: Two memory leaks in the rtl_usb_probe() function (CVE-2019-19063)

• kernel: A memory leak in the rtl8xxxu_submit_int_urb() function (CVE-2019-19068)

• kernel: A memory leak in the predicate_parse() function (CVE-2019-19072)

• kernel: information leak bug caused by a malicious USB device in the drivers/media/usb/ttusb-dec/ttusb_dec.c (CVE-2019-19533)

• kernel: Null pointer dereference in drop_sysctl_table() (CVE-2019-20054)

• kernel: kernel stack information leak on s390/s390x (CVE-2020-10773)

• kernel: possibility of memory disclosure when reading the file /proc/sys/kernel/rh_features (CVE-2020-10774)

• kernel: vhost-net: stack overflow in get_raw_socket while checking sk_family field (CVE-2020-10942)

• kernel: sync of excessive duration via an XFS v5 image with crafted metadata (CVE-2020-12655)

This update is based on the upstream 5.6.14 kernel and fixes at least the following security issues:

A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7. This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network user to crash the system kernel, resulting in a denial of service (CVE-2020-10711).

An issue was discovered in the Linux kernel through 5.6.11. sg_write lacks an sg_remove_request call in a certain failure case (CVE-2020-12770).

gadget_dev_desc_UDC_store in drivers/usb/gadget/configfs.c in the Linux kernel through 5.6.13 relies on kstrdup without considering the possibility of an internal '\0' value, which allows attackers to trigger an out-of-bounds read (CVE-2020-13143).

Other fixes in this update:

• KVM: x86: only do L1TF workaround on affected processors (this now correctly excludes non-affected AMD Ryzen and EPYC processors)
• add Amd Renoir detection to amd_nb, hwmon (k10temp) and EDAC
• additional fixes to the integrated virtualbox support for better interaction with virtualbox.org releases
• ndiswrapper has been updated to 1.63
• wireguard-tools have been updated to 1.0.20200513

For other upstream fixes and changes in this update, see the refenced changelogs.

This update is based on the upstream 5.6.14 kernel and fixes at least the following security issues:

A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7. This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network user to crash the system kernel, resulting in a denial of service (CVE-2020-10711).

usb_sg_cancel in drivers/usb/core/message.c in the Linux kernel before 5.6.8 has a use-after-free because a transfer occurs without a reference(CVE-2020-12464).

An issue was discovered in the Linux kernel before 5.6.7. xdp_umem_reg in net/xdp/xdp_umem.c has an out-of-bounds write (by a user with the CAP_NET_ADMIN capability) because of a lack of headroom validation (CVE-2020-12659).

An issue was discovered in the Linux kernel through 5.6.11. sg_write lacks an sg_remove_request call in a certain failure case (CVE-2020-12770).

gadget_dev_desc_UDC_store in drivers/usb/gadget/configfs.c in the Linux kernel through 5.6.13 relies on kstrdup without considering the possibility of an internal '\0' value, which allows attackers to trigger an out-of-bounds read (CVE-2020-13143).

For other fixes and changes in this update, see the refenced changelogs.

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

The following security bugs were fixed:

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

The following non-security bugs were fixed:

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

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

The following security bugs were fixed:

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

The following non-security bugs were fixed:

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

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

The following security bugs were fixed:

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

The following non-security bugs were fixed:

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

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

The following security bugs were fixed:

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

The following non-security bugs were fixed:

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

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

The following security bugs were fixed:

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

The following non-security bugs were fixed:

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

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

The following security bugs were fixed:

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

The following non-security bugs were fixed:

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

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

The following security bugs were fixed:

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

The following non-security bugs were fixed:

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

The SUSE Linux Enterprise 15 SP3 kernel was updated.

The following security bugs were fixed:

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

The following non-security bugs were fixed:

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

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

The following security bugs were fixed:

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

The SUSE Linux Enterprise 15 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-2018-3639: Fixed a speculative execution that may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis. (bsc#1087082)
• CVE-2021-20320: Fix a bug that allows a local attacker with special user privilege can circumvent the verifier and may lead to a confidentiality problem. (bsc#1190601)
• CVE-2021-0941: Fixed A missing sanity check to the current MTU check that may allow a local attacker with special user privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. (bnc#1192045)
• CVE-2021-31916: Fixed a bound check failure that could allows an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash, a leak of internal kernel information, or a privilege escalation problem. (bnc#1192781)
• CVE-2021-20322: Fixed a bug that provides to an attacker the ability to quickly scan open UDP ports. (bsc#1191790)
• CVE-2021-3772: Fixed an issue that would allow a blind attacker may be able to kill an existing SCTP association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and the attacker can send packets with spoofed IP addresses. (bsc#1190351)
• CVE-2021-34981: Fixed an issue that allows an attacker with a local account to escalate privileges when CAPI (ISDN) hardware connection fails. (bsc#1191961)
• CVE-2018-9517: Fixed possible memory corruption due to a use after free in pppol2tp_connect (bsc#1108488).
• CVE-2019-3874: Fixed possible denial of service attack via SCTP socket buffer used by a userspace applications (bnc#1129898).
• CVE-2019-3900: Fixed an infinite loop issue while handling incoming packets in handle_rx() (bnc#1133374).
• CVE-2020-12770: Fixed sg_remove_request call in a certain failure cases (bsc#1171420).
• CVE-2020-3702: Fixed a bug which could be triggered with specifically timed and handcrafted traffic and cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure. (bnc#1191193)
• CVE-2021-22543: Fixed improper handling of VM_IO|VM_PFNMAP vmas in KVM, which could bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allowed users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation (bsc#1186482).
• CVE-2021-33033: Fixed 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 (bsc#1186109).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400). -…

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

The following security bugs were fixed:

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

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

The following security bugs were fixed:

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

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

Transient execution side-channel attacks attacking the Branch History Buffer (BHB), named 'Branch Target Injection' and 'Intra-Mode Branch History Injection' are now mitigated.

The following security bugs were fixed:

• CVE-2022-0001: Fixed Branch History Injection vulnerability (bsc#1191580).
• CVE-2022-0002: Fixed Intra-Mode Branch Target Injection vulnerability (bsc#1191580).
• CVE-2020-12770: Fixed sg_remove_request call in a certain failure cases (bsc#1171420).
• CVE-2022-0617: Fixed a null pointer dereference in UDF file system functionality. A local user could crash the system by triggering udf_file_write_iter() via a malicious UDF image. (bsc#1196079)
• CVE-2022-0492: Fixed a privilege escalation related to cgroups v1 release_agent feature, which allowed bypassing namespace isolation unexpectedly (bsc#1195543).
• CVE-2021-45095: Fixed refcount leak in pep_sock_accept in net/phonet/pep.c (bsc#1193867).
• CVE-2021-4155: Fixed a data leak flaw that allows a local attacker to leak data on the XFS filesystem (bsc#1194272).
• CVE-2020-27820: Fixed a vulnerability where a use-after-frees in nouveau's postclose() handler could happen if removing device (bsc#1179599).
• CVE-2019-0136: Fixed an insufficient access control which allow an unauthenticated user to execute a denial of service (bsc#1193157).
• CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).

The following non-security bugs were fixed:

• kprobes: Limit max data_size of the kretprobe instances (bsc#1193669).
• md: check the return of mddev_find() (bsc#1195109).

The SUSE Linux Enterprise 15 SP5 RT kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2022-36280: Fixed out-of-bounds memory access vulnerability found in vmwgfx driver (bsc#1203332).
• CVE-2022-48742: rtnetlink: make sure to refresh master_dev/m_ops in __rtnl_newlink() (bsc#1226694).
• CVE-2022-49033: btrfs: qgroup: fix sleep from invalid context bug in btrfs_qgroup_inherit() (bsc#1232045).
• CVE-2023-1382: Fixed denial of service in tipc_conn_close (bsc#1209288).
• CVE-2023-52920: bpf: support non-r10 register spill/fill to/from stack in precision tracking (bsc#1232823).
• CVE-2024-26886: Bluetooth: af_bluetooth: Fix deadlock (bsc#1223044).
• CVE-2024-26924: scsi: lpfc: Release hbalock before calling lpfc_worker_wake_up() (bsc#1225820).
• CVE-2024-36915: nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies (bsc#1225758).
• CVE-2024-44934: net: bridge: mcast: wait for previous gc cycles when removing port (bsc#1229809).
• CVE-2024-47666: scsi: pm80xx: Set phy->enable_completion only when we wait for it (bsc#1231453).
• CVE-2024-47678: icmp: change the order of rate limits (bsc#1231854).
• CVE-2024-49944: sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start (bsc#1232166).
• CVE-2024-49952: netfilter: nf_tables: prevent nf_skb_duplicated corruption (bsc#1232157).
• CVE-2024-50018: net: napi: Prevent overflow of napi_defer_hard_irqs (bsc#1232419).
• CVE-2024-50143: udf: fix uninit-value use in udf_get_fileshortad (bsc#1233038).
• CVE-2024-50166: fsl/fman: Fix refcount handling of fman-related devices (bsc#1233050).
• CVE-2024-50181: clk: imx: Remove CLK_SET_PARENT_GATE for DRAM mux for i.MX7D (bsc#1233127).
• CVE-2024-50202: nilfs2: propagate directory read errors from nilfs_find_entry() (bsc#1233324).
• CVE-2024-50211: udf: refactor inode_bmap() to handle error (bsc#1233096).
• CVE-2024-50256: netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6() (bsc#1233200).
• CVE-2024-50262: bpf: Fix out-of-bounds write in trie_get_next_key() (bsc#1233239).
• CVE-2024-50296: net: hns3: fix kernel crash when uninstalling driver (bsc#1233485).
• CVE-2024-53051: drm/i915/hdcp: Add encoder check in intel_hdcp_get_capability (bsc#1233547).
• CVE-2024-53055: wifi: iwlwifi: mvm: fix 6 GHz scan construction (bsc#1233550).
• CVE-2024-53056: drm/mediatek: Fix potential NULL dereference in mtk_crtc_destroy() (bsc#1233568).
• CVE-2024-53064: idpf: fix idpf_vc_core_init error path (bsc#1233558).
• CVE-2024-53072: platform/x86/amd/pmc: Detect when STB is not available (bsc#1233564).
• CVE-2024-53090: afs: Fix lock recursion (bsc#1233637).
• CVE-2024-53101: fs: Fix uninitialized value issue in from_kuid and from_kgid (bsc#1233769).
• CVE-2024-53113: mm: fix NULL pointer dereference in alloc_pages_bulk_noprof (bsc#1234077).
• CVE-2024-53114: x86/CPU/AMD: Clear virtualized VMLOAD/VMSAVE on Zen4 client (bsc#1234072).
• CVE-2024-53119: virtio/vsock: Fix accept_queue memory leak (bsc#1234073).
• CVE-2024-53122: mptcp: cope racing subflow creation in mptcp_rcv_space_adjust (bsc#1234076).
• CVE-2024-53125: bpf: sync_linked_regs() must preserve subreg_def (bsc#1234156).
• CVE-2024-53130: nilfs2: fix null-ptr-deref in block_dirty_buffer tracepoint (bsc#1234219).
• CVE-2024-53131: nilfs2: fix null-ptr-deref in block_touch_buffer tracepoint (bsc#1234220).
• CVE-2024-53146: NFSD: Prevent a potential integer overflow (bsc#1234853).
• CVE-2024-53150: ALSA: usb-audio: Fix out of bounds reads when finding clock sources (bsc#1234834).
• CVE-2024-53156: wifi: ath9k: add range check for conn_rsp_epid in htc_connect_service() (bsc#1234846).
• CVE-2024-53157: firmware: arm_scpi: Check the DVFS OPP count returned by the firmware (bsc#1234827).
• CVE-2024-53158: soc: qcom: geni-se: fix array underflow in geni_se_clk_tbl_get() (bsc#1234811).
• CVE-2024-53161: EDAC/bluefield: Fix potential integer overflow (bsc#1234856).
• CVE-2024-53162: crypto: qat/qat_4xxx - fix off by one in uof_get_name()…

It was discovered that the elf handling code in the Linux kernel did not initialize memory before using it in certain situations. A local attacker could use this to possibly expose sensitive information (kernel memory). (CVE-2020-10732)

Matthew Sheets discovered that the SELinux network label handling implementation in the Linux kernel could be coerced into de-referencing a NULL pointer. A remote attacker could use this to cause a denial of service (system crash). (CVE-2020-10711)

It was discovered that the SCSI generic (sg) driver in the Linux kernel did not properly handle certain error conditions correctly. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2020-12770)

It was discovered that the USB Gadget device driver in the Linux kernel did not validate arguments passed from configfs in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2020-13143)

It was discovered that the KVM implementation in the Linux kernel did not properly deallocate memory on initialization for some processors. A local attacker could possibly use this to cause a denial of service. (CVE-2020-12768)

Matthew Sheets discovered that the SELinux network label handling implementation in the Linux kernel could be coerced into de-referencing a NULL pointer. A remote attacker could use this to cause a denial of service (system crash). (CVE-2020-10711)

It was discovered that the SCSI generic (sg) driver in the Linux kernel did not properly handle certain error conditions correctly. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2020-12770)

It was discovered that the USB Gadget device driver in the Linux kernel did not validate arguments passed from configfs in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2020-13143)

Dmitry Vyukov discovered that the SELinux netlink security hook in the Linux kernel did not validate messages in some situations. A privileged attacker could use this to bypass SELinux netlink restrictions. (CVE-2020-10751)

It was discovered that the KVM implementation in the Linux kernel did not properly deallocate memory on initialization for some processors. A local attacker could possibly use this to cause a denial of service. (CVE-2020-12768)

Matthew Sheets discovered that the SELinux network label handling implementation in the Linux kernel could be coerced into de-referencing a NULL pointer. A remote attacker could use this to cause a denial of service (system crash). (CVE-2020-10711)

It was discovered that the SCSI generic (sg) driver in the Linux kernel did not properly handle certain error conditions correctly. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2020-12770)

It was discovered that the USB Gadget device driver in the Linux kernel did not validate arguments passed from configfs in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2020-13143)

Dmitry Vyukov discovered that the SELinux netlink security hook in the Linux kernel did not validate messages in some situations. A privileged attacker could use this to bypass SELinux netlink restrictions. (CVE-2020-10751)

It was discovered that the KVM implementation in the Linux kernel did not properly deallocate memory on initialization for some processors. A local attacker could possibly use this to cause a denial of service. (CVE-2020-12768)

It was discovered that the network block device (nbd) implementation in the Linux kernel did not properly check for error conditions in some situations. An attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-16089)

It was discovered that the btrfs file system implementation in the Linux kernel did not properly validate file system metadata in some situations. An attacker could use this to construct a malicious btrfs image that, when mounted, could cause a denial of service (system crash). (CVE-2019-19036, CVE-2019-19318, CVE-2019-19813, CVE-2019-19816)

It was discovered that the btrfs implementation in the Linux kernel did not properly detect that a block was marked dirty in some situations. An attacker could use this to specially craft a file system image that, when unmounted, could cause a denial of service (system crash). (CVE-2019-19377)

It was discovered that the kernel->user space relay implementation in the Linux kernel did not properly check return values in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-19462)

Matthew Sheets discovered that the SELinux network label handling implementation in the Linux kernel could be coerced into de-referencing a NULL pointer. A remote attacker could use this to cause a denial of service (system crash). (CVE-2020-10711)

It was discovered that the SCSI generic (sg) driver in the Linux kernel did not properly handle certain error conditions correctly. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2020-12770)

It was discovered that the USB Gadget device driver in the Linux kernel did not validate arguments passed from configfs in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2020-13143)

It was discovered that the efi subsystem in the Linux kernel did not handle memory allocation failures during early boot in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-12380)

It was discovered that the btrfs file system in the Linux kernel in some error conditions could report register information to the dmesg buffer. A local attacker could possibly use this to expose sensitive information. (CVE-2019-19039)

It was discovered that a race condition existed in the Precision Time Protocol (PTP) implementation in the Linux kernel, leading to a use-after- free vulnerability. A local attacker could possibly use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-10690)

Matthew Sheets discovered that the SELinux network label handling implementation in the Linux kernel could be coerced into de-referencing a NULL pointer. A remote attacker could use this to cause a denial of service (system crash). (CVE-2020-10711)

It was discovered that the SCSI generic (sg) driver in the Linux kernel did not properly handle certain error conditions correctly. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2020-12770)

It was discovered that the USB Gadget device driver in the Linux kernel did not validate arguments passed from configfs in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2020-13143)

Shijie Luo discovered that the ext4 file system implementation in the Linux kernel did not properly check for a too-large journal size. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (soft lockup). (CVE-2020-8992)