SB20260912252 - Use-after-free in Linux kernel mt76 mt7925 driver
Published: September 12, 2026
Security Bulletin ID
SB20260912252
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-89523)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in the mt7925 Wi-Fi driver mlo_pm_work delayed work handler when the device is reset, suspended, or unregistered while the work is pending. A local user can trigger a device reset, suspension, or unregistration while the work is pending to cause a denial of service.
Pending work may send MCU commands while firmware is unavailable.
Remediation
Install update from vendor's website.