(RHSA-2023:4801) 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: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)

• kernel: kernel info leak issue in pfkey_register (CVE-2022-1353)

• kernel: unmap_mapping_range() race with munmap() on VM_PFNMAP mappings leads to stale TLB entry (CVE-2022-39188)

• kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c (CVE-2023-0458)

• 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):

• IOMMU/DMA updates for 9.1 (BZ#2192629)

• rbd: avoid fast-diff corruption in snapshot-based mirroring (BZ#2216570)

• Hyper-V RHEL-9: Fix VM crash/hang Issues due to fast VF add/remove events (BZ#2217067)

• KVM: x86: fix sending PV IPI (BZ#2225337)

• libceph: harden msgr2.1 frame segment length checks (BZ#2227071)