RHSA-2026:5821MediumCVSS 7.3

Red Hat Security Advisory: kernel security update

Published
March 25, 2026
Last Modified
July 30, 2026

🔗 CVE IDs covered (3)

CVE-2025-38024 →CVE-2025-38129 →CVE-2025-40269 →

📋 Description

CVE-2025-38024 — kernel: Linux kernel: RDMA/rxe use-after-free vulnerability leading to potential arbitrary code execution CVE-2025-38129 — kernel: Linux kernel: Use-after-free vulnerability in page_pool_recycle_in_ring can lead to arbitrary code execution CVE-2025-40269 — kernel: Linux kernel ALSA USB audio driver: Buffer overflow leading to information disclosure and denial of service

🎯 Affected products52

  • Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • bpftool-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • bpftool-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • bpftool-debuginfo-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • bpftool-debuginfo-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • kernel-0:4.18.0-305.187.1.el8_4.src as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • kernel-0:4.18.0-305.187.1.el8_4.src as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • kernel-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • kernel-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • kernel-abi-stablelists-0:4.18.0-305.187.1.el8_4.noarch as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • kernel-abi-stablelists-0:4.18.0-305.187.1.el8_4.noarch as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • kernel-core-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • kernel-core-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • kernel-debug-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • kernel-debug-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • kernel-debug-core-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • kernel-debug-core-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • kernel-debug-debuginfo-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • kernel-debug-debuginfo-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • kernel-debug-devel-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • kernel-debug-devel-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • kernel-debug-modules-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • kernel-debug-modules-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • kernel-debug-modules-extra-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • kernel-debug-modules-extra-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • kernel-debuginfo-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • kernel-debuginfo-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • kernel-debuginfo-common-x86_64-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • kernel-debuginfo-common-x86_64-0:4.18.0-305.187.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • +22 more not shown

✅ Remediation

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. Workaround: To mitigate this issue, prevent the `rxe` kernel module from loading. This can be achieved by creating a blacklist rule. 1. Create a file `/etc/modprobe.d/blacklist-rxe.conf` with the following content: ``` blacklist rxe install rxe /bin/true ``` 2. Rebuild the initial ramdisk: ```bash dracut -f -v ``` 3. Reboot the system for the changes to take effect. Warning: Blacklisting the `rxe` module may impact functionality that relies on Soft RoCE. Workaround: To mitigate this issue, prevent the `snd_usb_audio` kernel module from loading if USB audio functionality is not required. Create a file `/etc/modprobe.d/disable-snd-usb-audio.conf` with the following content: `install snd_usb_audio /bin/true` After creating the file, a system reboot is required for the changes to take effect. This action will disable all USB audio device functionality.

🔗 References (6)