CVE-2026-23420 wifi: wlcore: Fix a locking bug
A locking bug in the wlcore Wi-Fi driver can lead to a race condition, potentially causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-23420?
CVE-2026-23420 is a medium-severity vulnerability in Linux kernel, published on 3 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
wifi: wlcore: Fix a locking bug
Make sure that wl->mutex is locked before it is unlocked. This has been detected by the Clang thread-safety analyzer.
Weakness: CWE-667
Which versions are affected by CVE-2026-23420?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-23420?
Apply the vendor's patch.
Is CVE-2026-23420 being exploited?
There is no known exploitation of CVE-2026-23420 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-23420, DEBIAN-CVE-2026-23420, GHSA-x5cv-7h6w-46hm, ROOT-OS-DEBIAN-11-CVE-2026-23420, ROOT-OS-DEBIAN-12-CVE-2026-23420, ROOT-OS-DEBIAN-13-CVE-2026-23420 and 3 more.