Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-05-06T00:00:00 kernel: tracing: ring-buffer: Fix to check event length before using 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CWE-1284

A flaw was found in the Linux kernel's tracing ring-buffer subsystem. This vulnerability occurs in the `rb_read_data_buffer()` function, which fails to validate the length of an event before using it to determine the next memory address. If an event's length is corrupted, this can lead to an invalid memory access during system boot, potentially causing a denial of service (DoS) by crashing the system.

Red Hat Enterprise Linux 10 Affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-43210 https://nvd.nist.gov/vuln/detail/CVE-2026-43210 https://lore.kernel.org/linux-cve-announce/2026050649-CVE-2026-43210-f4dd@gregkh/T