Linux Kernel up to 5.15.21/5.16.7 hdmi-codec memcpy out-of-bounds

Summaryinfo

A vulnerability classified as problematic was found in Linux Kernel up to 5.15.21/5.16.7. The affected element is the function memcpy of the component hdmi-codec. The manipulation results in out-of-bounds. This vulnerability is known as CVE-2022-48739. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 5.15.21/5.16.7. Affected is the function memcpy of the component hdmi-codec. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ASoC: hdmi-codec: Fix OOB memory accesses Correct size of iec_status array by changing it to the size of status array of the struct snd_aes_iec958. This fixes out-of-bounds slab read accesses made by memcpy() of the hdmi-codec driver. This problem is reported by KASAN.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2022-48739. There are known technical details, but no exploit is available.

Upgrading to version 5.15.22 or 5.16.8 eliminates this vulnerability. Applying the patch 10007bd96b6c/1552e66be325/06feec6005c9 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

• 5.15.0
• 5.15.1
• 5.15.2
• 5.15.3
• 5.15.4
• 5.15.5
• 5.15.6
• 5.15.7
• 5.15.8
• 5.15.9
• 5.15.10
• 5.15.11
• 5.15.12
• 5.15.13
• 5.15.14
• 5.15.15
• 5.15.16
• 5.15.17
• 5.15.18
• 5.15.19
• 5.15.20
• 5.15.21
• 5.16.0
• 5.16.1
• 5.16.2
• 5.16.3
• 5.16.4
• 5.16.5
• 5.16.6
• 5.16.7

License

• open-source

Website

• Vendor: https://www.kernel.org/

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