Linux Kernel up to 5.11.20/5.12.3 ASoC denial of service

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.11.20/5.12.3. Affected by this vulnerability is an unknown functionality of the component ASoC. This manipulation causes denial of service. The identification of this vulnerability is CVE-2021-47037. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 5.11.20/5.12.3 (Operating System). Affected by this vulnerability is some unknown processing of the component ASoC. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ASoC: q6afe-clocks: fix reprobing of the driver Q6afe-clocks driver can get reprobed. For example if the APR services are restarted after the firmware crash. However currently Q6afe-clocks driver will oops because hw.init will get cleared during first _probe call. Rewrite the driver to fill the clock data at runtime rather than using big static array of clocks.

The weakness was shared 02/28/2024. It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2021-47037 since 02/27/2024. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 5.11.21, 5.12.4 or 5.13 eliminates this vulnerability. Applying the patch 6893df3753be/62413972f526/96fadf7e8ff4 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.

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Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.11.0
• 5.11.1
• 5.11.2
• 5.11.3
• 5.11.4
• 5.11.5
• 5.11.6
• 5.11.7
• 5.11.8
• 5.11.9
• 5.11.10
• 5.11.11
• 5.11.12
• 5.11.13
• 5.11.14
• 5.11.15
• 5.11.16
• 5.11.17
• 5.11.18
• 5.11.19
• 5.11.20
• 5.12.0
• 5.12.1
• 5.12.2
• 5.12.3

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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