SB20260918121 - Use-after-free in Linux kernel ath ath12k driver
Published: September 18, 2026
Security Bulletin ID
SB20260918121
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-2026-93094)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to trigger a use-after-free condition.
The vulnerability exists due to failure to unassign published dp_link_peer references in ath12k_mac_vdev_create() when AP virtual device creation fails after BSS self-peer creation. A local user can cause an AP virtual device creation rollback to trigger a use-after-free condition.
Subsequent lookups may access freed dp_link_peer objects.
Remediation
Install update from vendor's website.