(RHSA-2023:3723) Important: kernel security and bug fix update

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

Security Fix(es):

• kernel: use-after-free vulnerability in the perf_group_detach function of the Linux Kernel Performance Events (CVE-2023-2235)

• kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233)

• Kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)

• kernel: OOB access in the Linux kernel’s XFS subsystem (CVE-2023-2124)

• kernel: i2c: out-of-bounds write in xgene_slimpro_i2c_xfer() (CVE-2023-2194)

• kernel: tls: race condition in do_tls_getsockopt may lead to use-after-free or NULL pointer dereference (CVE-2023-28466)

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):

• Intel QAT Update - (kernel changes) (BZ#2176846)

• RPL-P IOTG/RPL-S IOTG: cpu frequency issues (BZ#2178857)

• In FIPS mode, kernel does not transition into error state when RCT or APT health tests fail (BZ#2181727)

• Kernel BUG in iwlmvm wifi driver when used Mesh systems (BZ#2186723)

• Azure RHEL 9 Backport upstream commit 93827a0a36396f2fd6368a54a020f420c8916e9b [KVM: VMX: Fix crash due to uninitialized current_vmcs] (BZ#2186822)

• RHEL 9 blktests nvme/047 lead kernel NULL pointer (BZ#2187536)

• Single Node Openshift cluster becomes unreachable after running less than 2 hours (BZ#2187709)

• kernel[-rt]: task deadline_test:1778 blocked for more than 622 seconds (BZ#2188655)

• fix page end in filemap_get_read_batch (BZ#2189349)

• RHEL 9.2 hwpoison: data loss when memory error occurs on hugetlb pagecache (BZ#2192348)

• wdat_wdt watchdog timeout triggered unexpectedly (BZ#2192585)

• ice: high CPU usage with GNSS or ptp4l (BZ#2203154)

• RHEL 9 “smpboot: Scheduler frequency invariance went wobbly, disabling!” on nohz_full CPUs after long run (BZ#2203178)

• Dying percpu kworkers cause issues on isolated CPUs [rhel-9] (BZ#2203229)

• FJ9.2 Bug: [REG] NFS infinite loop of COMMIT call and NFS4ERR_DELAY reply. (BZ#2203335)

• perf errors - “event syntax error: ‘unc_p_delayed_c_state_abort_core5’” b’_ value too big for format, maximum is 255’ (BZ#2207471)

• RHEL 9: Invalid character detected by rpminspect in Documentation/translations/zh_CN/process/magic-number.rst (BZ#2208242)

• cifs: backport small patches to bring us close to 9.1 - backport commit aea02fc40a7f cifs: fix wrong unlock before return from cifs_tree_connect (BZ#2209045)

• RHEL 9 x86_64, kdump 2nd kernel will randomly panic on “kvm-08-guest25.hv2” (BZ#2210614)