SB20260918306 - Memory leak in Linux kernel ath ath11k driver
Published: September 18, 2026
Security Bulletin ID
SB20260918306
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) Memory leak (CVE-ID: CVE-2026-90361)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
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 improper memory cleanup in ath11k_service_ready_ext_event() when parsing service-ready extension TLVs. A local user can cause parsing to fail after mac_phy_caps has been allocated to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0293be2212d319d59589082461abf2a9b626cd1c
- https://git.kernel.org/stable/c/047a817147806140cdef5fa25d69d7b7a24f905c
- https://git.kernel.org/stable/c/10ccd92825504c029390874c6fb84c62d9f263f9
- https://git.kernel.org/stable/c/1296cae53052881ddd571a9d4f467a16ebfb7f14
- https://git.kernel.org/stable/c/35cb3086b426b3468cfc32d0d8d9883409705ea9
- https://git.kernel.org/stable/c/7dbf0bc50cf3ddd039becd875691bb7f484fa004
- https://git.kernel.org/stable/c/854eb9053a793b73c4e8082e1923735a80c77bcd
- https://git.kernel.org/stable/c/f5bb3471c9f46c6cabc06a152c13fc518330913e