CVE-2026-46187
wifi: rsi: fix kthread lifetime race between self-exit and external-stop
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.
INFO
Published Date :
May 28, 2026, 10:16 a.m.
Last Modified :
June 11, 2026, 3:06 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Remove kthread_stop() calls.
- Ensure self-exit operation completes.
- Update the Linux kernel to the latest version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-46187.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-46187 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-46187
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-46187 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-46187 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Jun. 11, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-362 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.18.139 up to (excluding) 3.19 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.4.179 up to (excluding) 4.5 *cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.30 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.175 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.209 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.7 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.88 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.140 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.14.113 up to (excluding) 4.15 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.19.36 up to (excluding) 5.10.258 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.9.170 up to (excluding) 4.10 Added Reference Type kernel.org: https://git.kernel.org/stable/c/16d9f674c619838bdeae42abc0929c9c5477ea1f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4ac3095da22fc50e51ec10c3b8323c21ab3e441a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4f4c9b13c485abd0a2d2c97f9db339d1dd8e147f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4f697813162d5f9151726a6d2bee82bffe4b0256 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4f9a4ae8d2c198f01611ea376034c326ef43ab56 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/95fcb436586dc3c2983537d557ac05bbc6a027f3 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9dfe8a4458a063c6433526bc59112a169eee1aa3 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/db57a1aa54ff68669781976e4edb045e09e2b65b Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 01, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/4ac3095da22fc50e51ec10c3b8323c21ab3e441a Added Reference https://git.kernel.org/stable/c/4f697813162d5f9151726a6d2bee82bffe4b0256 Added Reference https://git.kernel.org/stable/c/9dfe8a4458a063c6433526bc59112a169eee1aa3 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2026
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/16d9f674c619838bdeae42abc0929c9c5477ea1f Added Reference https://git.kernel.org/stable/c/4f4c9b13c485abd0a2d2c97f9db339d1dd8e147f Added Reference https://git.kernel.org/stable/c/4f9a4ae8d2c198f01611ea376034c326ef43ab56 Added Reference https://git.kernel.org/stable/c/95fcb436586dc3c2983537d557ac05bbc6a027f3 Added Reference https://git.kernel.org/stable/c/db57a1aa54ff68669781976e4edb045e09e2b65b