CVE-2026-23420
Locking Bug in Linux wlcore WiFi Driver Causes Potential Deadlock
Publication date: 2026-04-03
Last updated on: 2026-04-24
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | 4.19 |
| linux | linux_kernel | From 6.19 (inc) to 6.19.7 (exc) |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | From 6.13 (inc) to 6.18.17 (exc) |
| linux | linux_kernel | From 6.2 (inc) to 6.6.130 (exc) |
| linux | linux_kernel | From 6.7 (inc) to 6.12.77 (exc) |
| linux | linux_kernel | From 5.11 (inc) to 5.15.203 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.167 (exc) |
| linux | linux_kernel | From 4.19.1 (inc) to 5.10.253 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-667 | The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a locking bug in the Linux kernel's wlcore wifi driver. Specifically, the issue involves improper handling of a mutex lock (wl->mutex), where the code attempts to unlock the mutex without ensuring it was previously locked. This bug was detected by the Clang thread-safety analyzer and has been fixed by making sure the mutex is locked before it is unlocked.
How can this vulnerability impact me? :
This vulnerability involves a locking bug in the Linux kernel's wlcore wifi driver, where the mutex is not properly locked before being unlocked. Such a bug can lead to potential race conditions or thread-safety issues, which might cause system instability or crashes.