CVE-2025-38424
kernel: Kernel: Denial of Service in perf due to user stack sampling during process exit
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 25, 2025
Updated · July 30, 2026
Description
A flaw was found in the Linux kernel's perf subsystem. A local user could trigger a synchronous external abort by attempting to sample the user stack during the process exit (do_exit()) phase. This occurs because the perf subsystem tries to access user space memory after it has been deallocated, leading to a system crash. This vulnerability results in a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-825 · Expired Pointer Dereference