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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-46187

wifi: rsi: fix kthread lifetime race between self-exit and external-stop

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 to < 4ac3095da22fc50e51ec10c3b8323c21ab3e441aaffected
  • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 to < 9dfe8a4458a063c6433526bc59112a169eee1aa3affected
  • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 to < 4f697813162d5f9151726a6d2bee82bffe4b0256affected
  • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 to < 95fcb436586dc3c2983537d557ac05bbc6a027f3affected
  • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 to < 16d9f674c619838bdeae42abc0929c9c5477ea1faffected
  • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 to < 4f9a4ae8d2c198f01611ea376034c326ef43ab56affected
  • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 to < 4f4c9b13c485abd0a2d2c97f9db339d1dd8e147faffected
  • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 to < db57a1aa54ff68669781976e4edb045e09e2b65baffected
  • d8f70ad66032363e3edceee81a7be2aaccb2d7f5affected
  • ec759c0015fb7d4f5c7cb5711d2c8905724c7983affected
  • c8ed05b1d8520f40395916438da9b38ce937a896affected
  • ad78e2e057ab8d914a2b5e3e6acf29c3c8a428a3affected
  • de1fd69b6541ff61177114d63af7ea719c426cf0affected
  • 3.18.139 to < 3.19affected
  • 4.4.179 to < 4.5affected
  • 4.9.170 to < 4.10affected
  • 4.14.113 to < 4.15affected
  • 4.19.36 to < 4.20affected

Linux Linux

Default version status: affected

  • 4.20affected
  • 0 to < 4.20unaffected
  • 5.10.258 to ≤ 5.10.*unaffected
  • 5.15.209 to ≤ 5.15.*unaffected
  • 6.1.175 to ≤ 6.1.*unaffected
  • 6.6.140 to ≤ 6.6.*unaffected
  • 6.12.88 to ≤ 6.12.*unaffected
  • 6.18.30 to ≤ 6.18.*unaffected
  • 7.0.7 to ≤ 7.0.*unaffected
  • 7.1 to ≤ *unaffected

References