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CVE-2026-46187

In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: fix kthread lifetime race between self-exit and external-stop RSI driver use bot…

Impact

In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: fix kthread lifetime race between self-exit and external-stop RSI driver use both self-exit(kthread_complete_and_exit) and external-stop (kthread_stop) when killing a kthread. Generally, kthread_stop() is called first, and in this case, no particular issues occur. However, in rare instances where kthread_complete_and_exit() is called first and then kthread_stop() is called, a UAF occurs because the kthread object, which has already exited and been freed, is accessed again. Therefore, to prevent this with minimal modification, you must remove kthread_stop() and change the code to wait until the self-exit operation is completed.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 3.18.139 before 3.19
from 4.4.179 before 4.5
from 4.9.170 before 4.10
from 4.14.113 before 4.15
from 4.19.36 before 5.10.258
from 5.11 before 5.15.209

Weakness classification

CWE-362

References