Out-of-bounds write in Linux kernel - CVE-2026-93122

Vulnerability details

The vulnerability allows a local user to write past the end of fixed-size sampling-rate arrays.

The vulnerability exists due to an out-of-bounds write in the UAC1 and UAC2 configfs rate-list store paths when parsing comma-separated sampling-rate lists containing more than ten entries. A local user can write a crafted rate list to a UAC configfs rate-list attribute to write past the end of fixed-size sampling-rate arrays.

Affected software

How to mitigate CVE-2026-93122

External References

• https://git.kernel.org/stable/c/3819c6f255a37c4d085ce9f264f9f11bf3c2c6bb
• https://git.kernel.org/stable/c/844d83d5964b87919b958ff48405188c6ddae9cc

Related Security Bulletins

• Out-of-bounds write in Linux kernel gadget function driver