Out-of-bounds write in Linux kernel - CVE-2026-64255
Published: July 27, 2026
Vulnerability identifier: #VU139736
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-64255
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to cause a denial of service.
The vulnerability exists due to an out-of-bounds access in BA session handlers in the iwlwifi mld component when processing a zero sta_mask value. A local attacker can trigger BA session handling with a zero sta_mask to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-64255
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3