SB20260812103 - Use-after-free in Linux kernel wireless
Published: August 12, 2026
Security Bulletin ID
SB20260812103
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-2026-68414)
CWE-ID: CWE-416 - Use After Free
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 use-after-free in cfg80211_sched_scan_results_wk when processing scheduled scan result work during device unregister. A local user can trigger scheduled scan result handling during interface teardown to cause a denial of service.
The issue is caused by a race condition between the scheduled-scan result path and the unregister/free path.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/308ffdf575560d7e7b8b21f1e3ca6276630f73bf
- https://git.kernel.org/stable/c/3368457b4871ae8f0f88d19c9a3e6270e850ede6
- https://git.kernel.org/stable/c/9293574ac208d18c11073538851fb69355beb3b5
- https://git.kernel.org/stable/c/b119c70b24776c8ab2a2c0515397b3b0ad4e66cd
- https://git.kernel.org/stable/c/edf0730be33696a1bd142792830d392129e495cc