CVE-2024-40964 ALSA: hda: cs35l41: Possible null pointer dereference in cs35l41_hda_unbind()

What is CVE-2024-40964?

CVE-2024-40964 is a medium-severity vulnerability in Linux kernel, published on 12 Jul 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-476

Which versions are affected by CVE-2024-40964?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-40964?

Apply the vendor's patch.

Is CVE-2024-40964 being exploited?

There is no known exploitation of CVE-2024-40964 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2024-40964, DEBIAN-CVE-2024-40964, GHSA-fm8x-479m-f33c, UBUNTU-CVE-2024-40964.