CVE-2026-80624: mfd: cs42l43: Sanity check firmware size

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-28 · updated 2026-08-28

Description

In the Linux kernel, the following vulnerability has been resolved: mfd: cs42l43: Sanity check firmware size Currently the code checks if a firmware was received, however it does not verify that the firmware size is larger than the firmware header. As the firmware pointer is dereferenced as a pointer to the header structure this could lead to an out of bounds memory access. Add the missing check.

Affected products

Linux kernel: 6.6 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/17d79248b4f370663f9d351409a130fc1ed9416d
https://git.kernel.org/stable/c/197a4c54d8a94fe2fb7829661b29f0859c10feb5
https://git.kernel.org/stable/c/2ce02059ceb6311a33026b62e6e4dc4ed22a3aef
https://git.kernel.org/stable/c/b6ef1a74b3ec254f87a6a3c554fe8f8083ebd37c
https://git.kernel.org/stable/c/d35e4032f16d7621468c8b56816e7935ebf590a7

Get alerted when CVE-2026-80624 or the next vulnerability affects your stack