CVE-2026-64001

In the Linux kernel, the following vulnerability has been resolved:

ALSA: pcm: oss: Fix setup list UAF on proc write error

sndpcmossprocwrite() links a newly allocated setup entry into the OSS setup list before duplicating the task name. If the task-name allocation fails, the error path frees the already linked entry and leaves setup_list pointing at freed memory.

A later OSS device open can then walk the stale list entry in sndpcmosslookfor_setup() and dereference freed memory.

Allocate the task name and initialize the setup entry before publishing the entry on setuplist. Also fetch the initial proc read iterator only after taking setupmutex, so all setup_list traversal follows the same list lifetime rules.