SB20260812420 - Use-after-free in Linux kernel mac802154
Published: August 12, 2026
Security Bulletin ID
SB20260812420
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) Use-after-free (CVE-ID: CVE-2026-68126)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/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 use-after-free in mac802154_scan_worker() when racing scan requests against interface deletion or PHY removal. A local user can trigger a scan while concurrently deleting the interface to cause a denial of service.
The issue is reachable by racing TRIGGER_SCAN against DEL_INTERFACE.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/234e5e898b713bc0b3a631b6f002897f43d046c8
- https://git.kernel.org/stable/c/59c1d5463b7bc5a2cdaae27108d1dfd67edc7d1b
- https://git.kernel.org/stable/c/5f303f622f6bb8907c405e5123a0ab0f70fb0065
- https://git.kernel.org/stable/c/bd7110f0caa32426140ff302a209c53294ef2cfd
- https://git.kernel.org/stable/c/dd4754194a706163294b6141460101b99082c8c7