RHSA-2026:34095 — Security Advisory

Red Hat Security Advisory: kernel security, bug fix, and enhancement update

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Severity

Important

Red Hat Product Security

RHEL 9

Products

Official CSAF product identity

Published · July 1, 2026

Updated · October 31, 2026

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

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

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

Security Fix(es):

kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)
kernel: RDMA/umem: Fix double dma_buf_unpin in failure path (CVE-2026-43128)
kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279)
kernel: dlm: validate length in dlm_search_rsb_tree (CVE-2026-43125)
kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329)
kernel: ipv6: rpl: reserve mac_len headroom when recompressed SRH grows (CVE-2026-43501)
kernel: ALSA: aloop: Fix peer runtime UAF during format-change stop (CVE-2026-46090)
kernel: RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event() (CVE-2026-46181)
kernel: exit: prevent preemption of oopsing TASK_DEAD task (CVE-2026-46173)

Bug Fix(es) and Enhancement(s):

[rhel-9] WARNING: possible recursive locking detected - vmd_enable_domain+0x757/0x910 (JIRA:RHEL-174467)

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.