VYPR
Medium severity4.7NVD Advisory· Published May 28, 2026· Updated Jun 11, 2026

CVE-2026-46187

CVE-2026-46187

Description

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.

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Affected products

6
  • Linux/Kernel4 versions
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 3 more
    • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=3.18.139,<3.19
    • cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
    • (no CPE)
  • osv-coords2 versions
    >= 4.20.0, < 5.10.258+ 1 more
    • (no CPE)range: >= 4.20.0, < 5.10.258
    • (no CPE)range: < 7.0.11-1.1

Patches

Vulnerability mechanics

References

8

News mentions

0

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CVE-2026-46187 · Medium · VYPR