wifi: rsi: fix kthread lifetime race between self-exit and external-stop
Summary
| CVE | CVE-2026-46187 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-28 10:16:34 UTC |
| Updated | 2026-06-01 17:17:31 UTC |
| 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. |
Risk And Classification
EPSS: 0.000320000 probability, percentile 0.097210000 (date 2026-06-03)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 4c62764d0fc21a34ffc44eec1210038c3a2e4473 4ac3095da22fc50e51ec10c3b8323c21ab3e441a git | Not specified |
| CNA | Linux | Linux | affected 4c62764d0fc21a34ffc44eec1210038c3a2e4473 9dfe8a4458a063c6433526bc59112a169eee1aa3 git | Not specified |
| CNA | Linux | Linux | affected 4c62764d0fc21a34ffc44eec1210038c3a2e4473 4f697813162d5f9151726a6d2bee82bffe4b0256 git | Not specified |
| CNA | Linux | Linux | affected 4c62764d0fc21a34ffc44eec1210038c3a2e4473 95fcb436586dc3c2983537d557ac05bbc6a027f3 git | Not specified |
| CNA | Linux | Linux | affected 4c62764d0fc21a34ffc44eec1210038c3a2e4473 16d9f674c619838bdeae42abc0929c9c5477ea1f git | Not specified |
| CNA | Linux | Linux | affected 4c62764d0fc21a34ffc44eec1210038c3a2e4473 4f9a4ae8d2c198f01611ea376034c326ef43ab56 git | Not specified |
| CNA | Linux | Linux | affected 4c62764d0fc21a34ffc44eec1210038c3a2e4473 4f4c9b13c485abd0a2d2c97f9db339d1dd8e147f git | Not specified |
| CNA | Linux | Linux | affected 4c62764d0fc21a34ffc44eec1210038c3a2e4473 db57a1aa54ff68669781976e4edb045e09e2b65b git | Not specified |
| CNA | Linux | Linux | affected d8f70ad66032363e3edceee81a7be2aaccb2d7f5 git | Not specified |
| CNA | Linux | Linux | affected ec759c0015fb7d4f5c7cb5711d2c8905724c7983 git | Not specified |
| CNA | Linux | Linux | affected c8ed05b1d8520f40395916438da9b38ce937a896 git | Not specified |
| CNA | Linux | Linux | affected ad78e2e057ab8d914a2b5e3e6acf29c3c8a428a3 git | Not specified |
| CNA | Linux | Linux | affected de1fd69b6541ff61177114d63af7ea719c426cf0 git | Not specified |
| CNA | Linux | Linux | affected 3.18.139 3.19 semver | Not specified |
| CNA | Linux | Linux | affected 4.4.179 4.5 semver | Not specified |
| CNA | Linux | Linux | affected 4.9.170 4.10 semver | Not specified |
| CNA | Linux | Linux | affected 4.14.113 4.15 semver | Not specified |
| CNA | Linux | Linux | affected 4.19.36 4.20 semver | Not specified |
| CNA | Linux | Linux | affected 4.20 | Not specified |
| CNA | Linux | Linux | unaffected 4.20 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.258 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.209 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.175 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.140 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.88 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.30 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.7 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1-rc3 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/4f9a4ae8d2c198f01611ea376034c326ef43ab56 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/db57a1aa54ff68669781976e4edb045e09e2b65b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4ac3095da22fc50e51ec10c3b8323c21ab3e441a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4f4c9b13c485abd0a2d2c97f9db339d1dd8e147f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/95fcb436586dc3c2983537d557ac05bbc6a027f3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4f697813162d5f9151726a6d2bee82bffe4b0256 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/16d9f674c619838bdeae42abc0929c9c5477ea1f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/9dfe8a4458a063c6433526bc59112a169eee1aa3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.