(RHSA-2023:1566) Important: kernel security, bug fix, and enhancement update

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

Security Fix(es):

• kernel: stack overflow in do_proc_dointvec and proc_skip_spaces (CVE-2022-4378)

• ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266)

• kernel: FUSE filesystem low-privileged user privileges escalation (CVE-2023-0386)

• kernel: net: CPU soft lockup in TC mirred egress-to-ingress action (CVE-2022-4269)

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.

Bug Fix(es):

• kernel panic on reboot due to a bug in mei_wdt module (BZ#2139770)

• RHEL8: Practically limit “Dummy wait” workaround to old Intel systems (BZ#2142170)

• AMDSERVER 8.7: amdpstate driver incorrectly designed to load as default for Genoa (BZ#2151275)

• RHEL-8.8: Update RDMA core to Linux v6.0 (BZ#2161750)

• Kernel panic observed during VxFS module unload (BZ#2162763)

• Client not able to connect to rhel server: SYN is answered by chalange ACK and RST is ignored (BZ#2165587)

• RHEL8.4: s390/kexec: fix ipl report address for kdump (BZ#2166296)

• kvm-unit-test reports unhandled exception on AMD (BZ#2166362)

• Windows Server 2019 guest randomly pauses with “KVM: entry failed, hardware error 0x80000021” (BZ#2166368)

• Unable to get QinQ working with ConnectX-4 Lx in SR-IOV scenario (BZ#2166665)

• panic in fib6_rule_suppress+0x22 with custom xdp prog involved in (BZ#2167602)

• net/mlx5e: Fix use-after-free when reverting termination table (BZ#2167640)

• RHEL 8.7: EEH injection failed to recover on Mellanox adapter. (BZ#2167645)

• mlx5: lag and sriov fixes (BZ#2167647)

• RHEL8.4: dasd: fix no record found for raw_track_access (BZ#2167776)

• GSS: Set of fixes in ceph kernel module to prevent OCS node kernel crash - blocklist the kclient when receiving corrupted snap trace (BZ#2168896)

• Azure RHEL8 scsi: storvsc: Fix swiotlb bounce buffer leak in confidential VM (BZ#2170228)

• fast_isolate_freepages scans out of target zone (BZ#2170576)

• Backport Request for locking/rwsem commits (BZ#2170939)

• ipv6 traffic stop when an sriov vf have ipv6 address (BZ#2172550)

• Hyper-V RHEL8.8: Update MANA driver (BZ#2173103)

Enhancement(s):

• Intel 8.8 FEAT SPR CPU: AMX: Improve the init_fpstate setup code (BZ#2168384)