Out-of-bounds read in Linux kernel - CVE-2026-74650
Published: August 24, 2026
Vulnerability identifier: #VU144882
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-74650
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in WMM_param_handler() when processing a vendor-specific information element carrying the WMM OUI. A remote attacker can send a specially crafted association response or information element blob to disclose sensitive information.
The issue is reachable from a remote peer through association response parsing from the access point.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-74650
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.105-1
linux (Debian package) - update to 6.12.105-1
External References
- https://git.kernel.org/stable/c/1158b9931207392d6dd136aa0c4be18893b50fa1
- https://git.kernel.org/stable/c/2bee6f7a0f0125238951e31da2e96d06fe359043
- https://git.kernel.org/stable/c/6cdca4c8b64c15a3ab9ad7a85f482e9519eadf93
- https://git.kernel.org/stable/c/ae21407350151bddfd4fea7aa39bd0643c0ca9d3
- https://git.kernel.org/stable/c/ce2399717de242344880044b91a20a712644fdfb
- https://git.kernel.org/stable/c/e429c6dfd5d2324cd866daaf4c29d5cfe4dea0e4
- https://git.kernel.org/stable/c/e5b7610008f4e6a80c8b071aa77ddbd5e17ea472