(RHSA-2023:5628) 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: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails (CVE-2023-3609)

• kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)

• kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route (CVE-2023-4128)

• kernel: netfilter: NULL pointer dereference in nf_tables due to zeroed list head (CVE-2023-1095)

• kernel: save/restore speculative MSRs during S3 suspend/resume (CVE-2023-1637)

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):

• avoid unnecessary page fault retires on shared memory types (BZ#2221102)

• [Hyper-V][RHEL-8] Fix VM crash/hang Issues due to fast VF add/remove events (BZ#2227261)

• kernel-devel RPM cross-compiled by CKI contains host-arch scripts (BZ#2232139)

• iavf: hang in iavf_remove() - SNO node hangs after running systemctl reboot (BZ#2232405)

• netfilter: RHEL 8.8 phase 2 backports from upstream (BZ#2236818)