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Review reviewHigh

CVE-2024-46713

Linux Linux, linux kernel

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.

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2024.09.14
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

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 product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 45bfb2e50471abbbfd83d40d28c986078b0d24ff < 7882923f1cb88dc1a17f2bf0c81b1fc80d44db82, >= 45bfb2e50471abbbfd83d40d28c986078b0d24ff < 52d13d224fdf1299c8b642807fa1ea14d693f5ff, >= 45bfb2e50471abbbfd83d40d28c986078b0d24ff < 9dc7ad2b67772cfb94ceb3b0c9c4023c2463215d, >= 45bfb2e50471abbbfd83d40d28c986078b0d24ff < c4b69bee3f4ef76809288fe6827bc14d4ae788ef, >= 45bfb2e50471abbbfd83d40d28c986078b0d24ff < b9b6882e243b653d379abbeaa64a500182aba370, >= 45bfb2e50471abbbfd83d40d28c986078b0d24ff < 2ab9d830262c132ab5db2f571003d80850d56b2a, >= 4.1, >= 4.1 < 5.10.226, >= 5.11 < 5.15.167, >= 5.16 < 6.1.110, >= 6.2 < 6.6.51, >= 6.7 < 6.10.10, 6.11
Fixed versions
5.10.226, 5.15.167, 6.1.110, 6.6.51, 6.10.10

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-787
CVE-2024-46713 — Linux Linux, linux kernel | SECUFOCUS NOW