RHSA-2025:11245 — Security Advisory

Red Hat Security Advisory: kernel security update

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Severity

Important

Red Hat Product Security

RHEL 9

Products

Official CSAF product identity

Published · July 16, 2025

Updated · November 1, 2026

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.4 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.

Description

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

Security Fix(es):

kernel: ipv6: mcast: extend RCU protection in igmp6_send() (CVE-2025-21759)
kernel: Squashfs: fix handling and sanity checking of xattr_ids count (CVE-2023-52933)
kernel: net: atm: fix use after free in lec_send() (CVE-2025-22004)
kernel: ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all() (CVE-2025-22121)
kernel: ext4: fix off-by-one error in do_split (CVE-2025-23150)
kernel: ext4: ignore xattrs past end (CVE-2025-37738)
kernel: net/mdiobus: Fix potential out-of-bounds clause 45 read/write access (CVE-2025-38110)

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.