Linux Kernel up to 5.10.31/5.11/5.11.15 idxd privilege escalation

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel up to 5.10.31/5.11/5.11.15. This vulnerability affects unknown code of the component idxd. This manipulation causes an unknown weakness. This vulnerability is handled as CVE-2021-46917. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.10.31/5.11/5.11.15 (Operating System). It has been declared as problematic. Affected by this vulnerability is some unknown functionality of the component idxd. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix wq cleanup of WQCFG registers A pre-release silicon erratum workaround where wq reset does not clear WQCFG registers was leaked into upstream code. Use wq reset command instead of blasting the MMIO region. This also address an issue where we clobber registers in future devices.

The weakness was released 02/27/2024. It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2021-46917 since 02/25/2024. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 5.10.32, 5.11.16 or 5.12 eliminates this vulnerability. Applying the patch e5eb9757fe4c/f7dc8f561916/ea9aadc06a9f 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

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4
• 5.5
• 5.6
• 5.7
• 5.8
• 5.9
• 5.10
• 5.10.0
• 5.10.1
• 5.10.2
• 5.10.3
• 5.10.4
• 5.10.5
• 5.10.6
• 5.10.7
• 5.10.8
• 5.10.9
• 5.10.10
• 5.10.11
• 5.10.12
• 5.10.13
• 5.10.14
• 5.10.15
• 5.10.16
• 5.10.17
• 5.10.18
• 5.10.19
• 5.10.20
• 5.10.21
• 5.10.22
• 5.10.23
• 5.10.24
• 5.10.25
• 5.10.26
• 5.10.27
• 5.10.28
• 5.10.29
• 5.10.30
• 5.10.31
• 5.11
• 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

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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