Improper input validation in Linux kernel - CVE-2026-53317
Published: June 29, 2026
Vulnerability identifier: #VU135717
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-53317
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper input validation in the mt7921 wifi driver when handling station association identifiers on IFTYPE_AP interfaces. A local user can configure a station with an out-of-range AID value to cause a denial of service.
The issue was observed on 7922 hardware and only on IFTYPE_AP interfaces; IFTYPE_STATION behavior was not reported as affected.
How to mitigate CVE-2026-53317
Install security update from vendor's repository.