RHSA-2022:7683 - Security Advisory

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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

Security Fix(es):

• off-path attacker may inject data or terminate victim's TCP session (CVE-2020-36516)
• race condition in VT_RESIZEX ioctl when vc_cons[i].d is already NULL leading to NULL pointer dereference (CVE-2020-36558)
• use-after-free vulnerability in function sco_sock_sendmsg() (CVE-2021-3640)
• memory leak for large arguments in video_usercopy function in drivers/media/v4l2-core/v4l2-ioctl.c (CVE-2021-30002)
• smb2_ioctl_query_info NULL Pointer Dereference (CVE-2022-0168)
• NULL pointer dereference in udf_expand_file_adinicbdue() during writeback (CVE-2022-0617)
• swiotlb information leak with DMA_FROM_DEVICE (CVE-2022-0854)
• uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM (CVE-2022-1016)
• race condition in snd_pcm_hw_free leading to use-after-free (CVE-2022-1048)
• use-after-free in tc_new_tfilter() in net/sched/cls_api.c (CVE-2022-1055)
• use-after-free and memory errors in ext4 when mounting and operating on a corrupted image (CVE-2022-1184)
• NULL pointer dereference in x86_emulate_insn may lead to DoS (CVE-2022-1852)
• buffer overflow in nft_set_desc_concat_parse() (CVE-2022-2078)
• nf_tables cross-table potential use-after-free may lead to local privilege escalation (CVE-2022-2586)
• openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639)
• use-after-free when psi trigger is destroyed while being polled (CVE-2022-2938)
• net/packet: slab-out-of-bounds access in packet_recvmsg() (CVE-2022-20368)
• possible to use the debugger to write zero into a location of choice (CVE-2022-21499)
• Spectre-BHB (CVE-2022-23960)
• Post-barrier Return Stack Buffer Predictions (CVE-2022-26373)
• memory leak in drivers/hid/hid-elo.c (CVE-2022-27950)
• double free in ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c (CVE-2022-28390)
• use after free in SUNRPC subsystem (CVE-2022-28893)
• use-after-free due to improper update of reference count in net/sched/cls_u32.c (CVE-2022-29581)
• DoS in nfqnl_mangle in net/netfilter/nfnetlink_queue.c (CVE-2022-36946)
• nfs_atomic_open() returns uninitialized data instead of ENOTDIR (CVE-2022-24448)

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 Red Hat Enterprise Linux 8.7 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Virtualization Host 4 for RHEL 8 x86_64
• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat CodeReady Linux Builder for x86_64 8 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 8 aarch64

Fixes

• BZ - 1946279 - CVE-2021-30002 kernel: memory leak for large arguments in video_usercopy function in drivers/media/v4l2-core/v4l2-ioctl.c
• BZ - 1948442 - [Hyper-V][RHEL8.4]On Hyper-V Host set gen1 MAX resolution > 3840x4320, GUI start failed, sometimes get kernel panic
• BZ - 1977993 - Add basic support for DPCD backlight control for Nouveau
• BZ - 1978539 - Add HMM and vm kselftests to CI
• BZ - 1980646 - CVE-2021-3640 kernel: use-after-free vulnerability in function sco_sock_sendmsg()
• BZ - 2004037 - Percpu counter usage is gradually getting increasing during podman container recreation.
• BZ - 2019942 - Touchpad on Fujitsu Lifebook T725 not detected
• BZ - 2037386 - CVE-2022-0168 kernel: smb2_ioctl_query_info NULL Pointer Dereference
• BZ - 2042424 - kernel-tools does not perform a daemon reload when installed/upgraded
• BZ - 2044837 - [Marvell 8.7 FEAT] update qedi driver to latest upstream
• BZ - 2051444 - CVE-2022-24448 kernel: nfs_atomic_open() returns uninitialized data instead of ENOTDIR
• BZ - 2053632 - CVE-2022-0617 kernel: NULL pointer dereference in udf_expand_file_adinicbdue() during writeback
• BZ - 2056383 - System freezes with callstack in dmesg: ret_from_fork
• BZ - 2058369 - WARNING due to invalid error code from smb2_get_enc_key, followed by crash
• BZ - 2058395 - CVE-2022-0854 kernel: swiotlb information leak with DMA_FROM_DEVICE
• BZ - 2059928 - CVE-2020-36516 kernel: off-path attacker may inject data or terminate victim's TCP session
• BZ - 2062284 - CVE-2022-23960 hw: cpu: arm64: Spectre-BHB
• BZ - 2062780 - Make possible to get information about network interface over rtnetlink using alternative interface name
• BZ - 2066614 - CVE-2022-1016 kernel: uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM
• BZ - 2066706 - CVE-2022-1048 kernel: race condition in snd_pcm_hw_free leading to use-after-free
• BZ - 2066976 - AF_PACKET SOCK_RAW drops GSO tagged packets.
• BZ - 2069408 - CVE-2022-27950 kernel: memory leak in drivers/hid/hid-elo.c
• BZ - 2069472 - block: update with v5.17 wrt. fixes
• BZ - 2070205 - CVE-2022-1184 kernel: use-after-free and memory errors in ext4 when mounting and operating on a corrupted image
• BZ - 2070220 - CVE-2022-1055 kernel: use-after-free in tc_new_tfilter() in net/sched/cls_api.c
• BZ - 2072552 - XFS: sync to upstream v5.13
• BZ - 2073064 - CVE-2022-28390 kernel: double free in ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c
• BZ - 2074208 - CVE-2022-28893 kernel: use after free in SUNRPC subsystem
• BZ - 2074317 - genirq/affinity: Consider that CPUs on nodes can be unbalanced
• BZ - 2080095 - [ESXi][RHEL8.7]Bring VMCI up to date with upstream
• BZ - 2084183 - CVE-2022-21499 kernel: possible to use the debugger to write zero into a location of choice
• BZ - 2084479 - CVE-2022-2639 kernel: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size()
• BZ - 2088021 - CVE-2022-29581 kernel: use-after-free due to improper update of reference count in net/sched/cls_u32.c
• BZ - 2089815 - CVE-2022-1852 kernel: NULL pointer dereference in x86_emulate_insn may lead to DoS
• BZ - 2090940 - block layer: dependency for fixing device mapper io accouting
• BZ - 2091539 - kernel panics if iwlwifi firmware can not be loaded
• BZ - 2096178 - CVE-2022-2078 kernel: buffer overflow in nft_set_desc_concat_parse()
• BZ - 2100259 - backport audit_log_kern_module memleak fix from v5.19-rc3
• BZ - 2107594 - backport vsock commits for RHEL-8.7
• BZ - 2109327 - [bonding] bugfix update from v5.19
• BZ - 2112693 - CVE-2020-36558 kernel: race condition in VT_RESIZEX ioctl when vc_cons[i].d is already NULL leading to NULL pointer dereference
• BZ - 2114577 - Regression in setting nfs mount options
• BZ - 2114878 - CVE-2022-2586 kernel: nf_tables cross-table potential use-after-free may lead to local privilege escalation
• BZ - 2115065 - CVE-2022-26373 hw: cpu: Intel: Post-barrier Return Stack Buffer Predictions
• BZ - 2115278 - CVE-2022-36946 kernel: DoS in nfqnl_mangle in net/netfilter/nfnetlink_queue.c
• BZ - 2120175 - CVE-2022-2938 kernel: use-after-free when psi trigger is destroyed while being polled
• BZ - 2123695 - CVE-2022-20368 kernel: net/packet: slab-out-of-bounds access in packet_recvmsg()

CVEs

• CVE-2020-36516
• CVE-2020-36558
• CVE-2021-3640
• CVE-2021-30002
• CVE-2022-0168
• CVE-2022-0617
• CVE-2022-0854
• CVE-2022-1016
• CVE-2022-1048
• CVE-2022-1055
• CVE-2022-1184
• CVE-2022-1852
• CVE-2022-2078
• CVE-2022-2586
• CVE-2022-2639
• CVE-2022-2938
• CVE-2022-20368
• CVE-2022-21499
• CVE-2022-23960
• CVE-2022-24448
• CVE-2022-26373
• CVE-2022-27950
• CVE-2022-28390
• CVE-2022-28893
• CVE-2022-29581
• CVE-2022-36946

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.7_release_notes/index
• https://access.redhat.com/solutions/6971358