RHSA-2026:35894 — Security Advisory

Red Hat Security Advisory: kernel security update

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Severity

Important

Red Hat Product Security

RHEL 8

Products

Official CSAF product identity

Published · July 6, 2026

Updated · October 30, 2026

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On.

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: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold (CVE-2026-31408)
kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)
kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279)
kernel: tcp: fix potential race in tcp_v6_syn_recv_sock() (CVE-2026-43198)
kernel: gfs2: Fix use-after-free in iomap inline data write path (CVE-2026-45984)
kernel: RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event() (CVE-2026-46181)

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.