CVE-2026-46187
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
28/05/2026
Last modified:
28/05/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
wifi: rsi: fix kthread lifetime race between self-exit and external-stop<br />
<br />
RSI driver use both self-exit(kthread_complete_and_exit) and external-stop<br />
(kthread_stop) when killing a kthread. Generally, kthread_stop() is called<br />
first, and in this case, no particular issues occur.<br />
<br />
However, in rare instances where kthread_complete_and_exit() is called<br />
first and then kthread_stop() is called, a UAF occurs because the kthread<br />
object, which has already exited and been freed, is accessed again.<br />
<br />
Therefore, to prevent this with minimal modification, you must remove<br />
kthread_stop() and change the code to wait until the self-exit operation<br />
is completed.
Impact
References to Advisories, Solutions, and Tools
- https://git.kernel.org/stable/c/16d9f674c619838bdeae42abc0929c9c5477ea1f
- https://git.kernel.org/stable/c/4f4c9b13c485abd0a2d2c97f9db339d1dd8e147f
- https://git.kernel.org/stable/c/4f9a4ae8d2c198f01611ea376034c326ef43ab56
- https://git.kernel.org/stable/c/95fcb436586dc3c2983537d557ac05bbc6a027f3
- https://git.kernel.org/stable/c/db57a1aa54ff68669781976e4edb045e09e2b65b



