What is RHSA-2026:4242?

RHSA-2026:4242 is a security advisory published by Red Hat Product Security with Medium severity. Red Hat Security Advisory: kernel security update

Which CVE IDs does RHSA-2026:4242 cover?

RHSA-2026:4242 covers the following CVE IDs: CVE-2025-38129, CVE-2025-40269. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:4242?

RHSA-2026:4242 has a CVSS v3 base score of 7.3, published by Red Hat Product Security.

Which products are affected by RHSA-2026:4242?

RHSA-2026:4242 affects 74 products, including: Red Hat Enterprise Linux BaseOS E4S (v.8.8); Red Hat Enterprise Linux BaseOS TUS (v.8.8); bpftool-0:4.18.0-477.132.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8); bpftool-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8); bpftool-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8); and others — see the full list on the advisory page.

RHSA-2026:4242MediumCVSS 7.3

Red Hat Security Advisory: kernel security update

Vendor

Red Hat Product Security

Published

March 11, 2026

Last Modified

July 30, 2026

🔗 CVE IDs covered (2)

CVE-2025-38129 →CVE-2025-40269 →

📋 Description

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 products74

Red Hat Enterprise Linux BaseOS E4S (v.8.8)
Red Hat Enterprise Linux BaseOS TUS (v.8.8)
bpftool-0:4.18.0-477.132.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
bpftool-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
bpftool-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
bpftool-debuginfo-0:4.18.0-477.132.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
bpftool-debuginfo-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
bpftool-debuginfo-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
kernel-0:4.18.0-477.132.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
kernel-0:4.18.0-477.132.1.el8_8.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
kernel-0:4.18.0-477.132.1.el8_8.src as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
kernel-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
kernel-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
kernel-abi-stablelists-0:4.18.0-477.132.1.el8_8.noarch as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
kernel-abi-stablelists-0:4.18.0-477.132.1.el8_8.noarch as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
kernel-core-0:4.18.0-477.132.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
kernel-core-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
kernel-core-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
kernel-debug-0:4.18.0-477.132.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
kernel-debug-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
kernel-debug-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
kernel-debug-core-0:4.18.0-477.132.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
kernel-debug-core-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
kernel-debug-core-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
kernel-debug-debuginfo-0:4.18.0-477.132.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
kernel-debug-debuginfo-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
kernel-debug-debuginfo-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
kernel-debug-devel-0:4.18.0-477.132.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
kernel-debug-devel-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
kernel-debug-devel-0:4.18.0-477.132.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
+44 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 `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.

🔗 CVE IDs covered (2)

📋 Description

🎯 Affected products74

✅ Remediation

🔗 References (5)