CVE-2024-40964: linux kernel Null Dereference — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: cs35l41: Possible null pointer dereference in cs35l41_hda_unbind() The cs35l41_hda_unbind() function clears the hda_component entry matching it's index and then dereferences the codec pointer held in the first element of the hda_component array, this is an issue when the device index was 0. Instead use the codec pointer stashed in the cs35l41_hda structure as it will still be valid.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
linux	linux_kernel	6.6 — 6.6.36
linux	linux_kernel	6.7 — 6.9.7
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/19be722369c347f3af1c5848e303980ed040b819 https://git.kernel.org/stable/c/6386682cdc8b41319c92fbbe421953e33a28840c https://git.kernel.org/stable/c/ff27bd8e17884f7cdefecb3f3817caadd6813dc0 https://git.kernel.org/stable/c/19be722369c347f3af1c5848e303980ed040b819 https://git.kernel.org/stable/c/6386682cdc8b41319c92fbbe421953e33a28840c https://git.kernel.org/stable/c/ff27bd8e17884f7cdefecb3f3817caadd6813dc0

Frequently Asked Questions

What is CVE-2024-40964? +

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: cs35l41: Possible null pointer dereference in cs35l41_hda_unbind() The cs35l41_hda_unbind() function clears the hda_component entry matching it's index and then dereferences the codec pointer held in the first element of the hda_component array, this is an issue when the device index was 0. Instead use the codec pointer stashed in the cs35l41_hda structure as it will still be valid. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-40964? +

CVE-2024-40964 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-40964? +

CVE-2024-40964 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-40964? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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