RHSA-2026:72629 - Security Advisory

Topic

An update for multiple packages is now available for Red Hat Enterprise Linux 8.

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.

Description

This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a running kernel. This patch module is targeted for kernel-4.18.0-553.72.1.el8_10.

Security Fix(es):

• kernel: RDMA/rxe: Fix double free in rxe_srq_from_init (CVE-2026-45852)
• kernel: RDMA/mana: Validate rx_hash_key_len (CVE-2026-46145)
• kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path (CVE-2026-46189)
• kernel: net: ipv6: use-after-free in fib6_rule_suppress due to stale res->rt6 pointer (CVE-2026-74581)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10 x86_64
• Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 8.10 ppc64le

Fixes

• BZ - 2482166 - CVE-2026-45852 kernel: RDMA/rxe: Fix double free in rxe_srq_from_init
• BZ - 2482581 - CVE-2026-46145 kernel: RDMA/mana: Validate rx_hash_key_len
• BZ - 2482588 - CVE-2026-46189 kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path
• BZ - 2520980 - CVE-2026-74581 kernel: net: ipv6: use-after-free in fib6_rule_suppress due to stale res->rt6 pointer

CVEs

• CVE-2026-45852
• CVE-2026-46145
• CVE-2026-46189
• CVE-2026-74581

References

• https://access.redhat.com/security/updates/classification/#important