Issued:
2026-03-25
Updated:
2026-03-25

RHSA-2026:5821 - Moderate: kernel security update

Synopsis

Moderate: kernel security update

Type/Severity

Security Advisory Moderate

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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: Linux kernel: RDMA/rxe use-after-free vulnerability leading to potential arbitrary code execution (CVE-2025-38024)

  • kernel: page_pool: Fix use-after-free in page_pool_recycle_in_ring (CVE-2025-38129)

  • kernel: Linux kernel ALSA USB audio driver: Buffer overflow leading to information disclosure and denial of service (CVE-2025-40269)

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

The system must be rebooted for this update to take effect.

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension8.4x86_64
Red Hat Enterprise Linux Server - AUS8.4x86_64

Updated Packages

  • bpftool-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-debug-modules-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-debuginfo-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-tools-4.18.0-305.187.1.el8_4.x86_64.rpm
  • perf-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-abi-stablelists-4.18.0-305.187.1.el8_4.noarch.rpm
  • kernel-cross-headers-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-4.18.0-305.187.1.el8_4.x86_64.rpm
  • python3-perf-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-debug-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-debug-modules-extra-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-devel-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-tools-libs-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-headers-4.18.0-305.187.1.el8_4.x86_64.rpm
  • perf-debuginfo-4.18.0-305.187.1.el8_4.x86_64.rpm
  • python3-perf-debuginfo-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-core-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-debug-debuginfo-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-debug-devel-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-modules-extra-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-tools-debuginfo-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-debug-core-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-doc-4.18.0-305.187.1.el8_4.noarch.rpm
  • kernel-4.18.0-305.187.1.el8_4.src.rpm
  • bpftool-debuginfo-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-debuginfo-common-x86_64-4.18.0-305.187.1.el8_4.x86_64.rpm
  • kernel-modules-4.18.0-305.187.1.el8_4.x86_64.rpm

Fixes

CVEs

References

Additional information