Linux Kernel up to 6.10.9 event->mmap_mutex deserialization

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.10.225/5.15.166/6.1.109/6.6.50/6.10.9. It has been declared as problematic. This affects the function event->mmap_mutex. Executing a manipulation can lead to deserialization. The identification of this vulnerability is CVE-2024-46713. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel up to 5.10.225/5.15.166/6.1.109/6.6.50/6.10.9. This vulnerability affects the function event->mmap_mutex. The manipulation with an unknown input leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. The impact remains unknown. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2024-46713 since 09/11/2024. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 208053 (Amazon Linux 2 : kernel (ALASKERNEL-5.15-2024-055)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.226, 5.15.167, 6.1.110, 6.6.51 or 6.10.10 eliminates this vulnerability. Applying the patch 7882923f1cb8/52d13d224fdf/9dc7ad2b6777/c4b69bee3f4e/b9b6882e243b/2ab9d830262c is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (208053). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.10.225
• 5.15.166
• 6.1.109
• 6.6.0
• 6.6.1
• 6.6.2
• 6.6.3
• 6.6.4
• 6.6.5
• 6.6.6
• 6.6.7
• 6.6.8
• 6.6.9
• 6.6.10
• 6.6.11
• 6.6.12
• 6.6.13
• 6.6.14
• 6.6.15
• 6.6.16
• 6.6.17
• 6.6.18
• 6.6.19
• 6.6.20
• 6.6.21
• 6.6.22
• 6.6.23
• 6.6.24
• 6.6.25
• 6.6.26
• 6.6.27
• 6.6.28
• 6.6.29
• 6.6.30
• 6.6.31
• 6.6.32
• 6.6.33
• 6.6.34
• 6.6.35
• 6.6.36
• 6.6.37
• 6.6.38
• 6.6.39
• 6.6.40
• 6.6.41
• 6.6.42
• 6.6.43
• 6.6.44
• 6.6.45
• 6.6.46
• 6.6.47
• 6.6.48
• 6.6.49
• 6.6.50
• 6.10.0
• 6.10.1
• 6.10.2
• 6.10.3
• 6.10.4
• 6.10.5
• 6.10.6
• 6.10.7
• 6.10.8
• 6.10.9

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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