RHSA-2023:4801 — Security Advisory

An update for kernel is now available for Red Hat Enterprise Linux 9.0 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. 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.

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)