Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-05-08T00:00:00 kernel: powerpc, perf: Check that current->mm is alive before getting user callchain 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CWE-826

A flaw was found in the Linux kernel. A local user can cause a denial of service (DoS) by triggering a NULL pointer dereference within the `perf` subsystem. This occurs when the memory management structure (`current->mm`) is prematurely released before the system attempts to retrieve the user callchain, leading to a kernel panic. This vulnerability can be exploited by running a profiling BPF (Berkeley Packet Filter) program.

Red Hat Enterprise Linux 10 Affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Affected kernel Red Hat Enterprise Linux 7 Affected kernel-rt Red Hat Enterprise Linux 8 Affected kernel Red Hat Enterprise Linux 8 Affected kernel-rt Red Hat Enterprise Linux 9 Affected kernel Red Hat Enterprise Linux 9 Affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-43416 https://nvd.nist.gov/vuln/detail/CVE-2026-43416 https://lore.kernel.org/linux-cve-announce/2026050845-CVE-2026-43416-8fb1@gregkh/T