CVE-2024-46713: perf/aux: Fix AUX buffer serialization

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-09-13 · updated 2026-08-04
Weakness: CWE-787

Description

In the Linux kernel, the following vulnerability has been resolved: perf/aux: Fix AUX buffer serialization Ole reported that event->mmap_mutex is strictly insufficient to serialize the AUX buffer, add a per RB mutex to fully serialize it. Note that in the lock order comment the perf_event::mmap_mutex order was already wrong, that is, it nesting under mmap_lock is not new with this patch.

Affected products

Linux kernel: from 4.1 before 5.10.226; from 5.11 before 5.15.167; from 5.16 before 6.1.110; from 6.2 before 6.6.51; from 6.7 before 6.10.10; 6.11-rc1, 6.11-rc2, 6.11-rc3, 6.11-rc4, 6.11-rc5, 6.11-rc6 — fixed in 5.10.226, 5.15.167, 6.1.110, 6.10.10, 6.6.51

How to fix

Upgrade to a fixed version: Linux kernel 5.10.226, 5.15.167, 6.1.110, 6.10.10. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2024-46713 or the next vulnerability affects your stack