SB20260812222 - NULL pointer dereference in Linux kernel mt76 mt7996 driver
Published: August 12, 2026
Security Bulletin ID
SB20260812222
CSH 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 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2026-68308)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a null pointer dereference in the mt7996 MCU handling code when processing HE PHY capability data. A local user can trigger code paths that use a NULL capability pointer to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/4fd85fd2373501b7386e93a5ce4a549d7c4e64e3
- https://git.kernel.org/stable/c/8b8a079e22ce9fc3c0d05b148ef67e4c6e576678
- https://git.kernel.org/stable/c/8bc7167e8a86489b7cb96a69cf1fb671d6df014b
- https://git.kernel.org/stable/c/d14238523ca4c6f5fcb54d1920eb2f8525a7711f
- https://git.kernel.org/stable/c/e858cf6bf99880343348ff1e8c942aaff1d9d592