SB20260406115 - Improper locking in Linux kernel ti wlcore driver
Published: April 6, 2026
Security Bulletin ID
SB20260406115
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper locking (CVE-ID: CVE-2026-23420)
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper locking in wlcore when handling wireless operations. A local user can trigger the affected code path to cause a denial of service.
The issue is caused by unlocking wl->mutex without ensuring that it is locked first.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1a1c28a08d74716f3f8e3a21c86b30d0ff13521a
- https://git.kernel.org/stable/c/5feeea59ed142e15c3284d0b1a364c6786bf3487
- https://git.kernel.org/stable/c/72c6df8f284b3a49812ce2ac136727ace70acc7c
- https://git.kernel.org/stable/c/7ab511003c5ae3bf5364d7699a2e3ab1db513680
- https://git.kernel.org/stable/c/aca4c9e4901b01b8b985993dc7df80bd1d1338bd
- https://git.kernel.org/stable/c/fcef983ad88832f3aa83491a174c345de57afbbd