Improper resource shutdown or release in Linux kernel - CVE-2026-90422
Published: September 18, 2026
Vulnerability identifier: #VU151060
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-90422
CWE-ID: CWE-404
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource cleanup in the MediaTek PLL frequency-hopping clock driver when failing to register a PLL. A local user can trigger a failed PLL registration to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-90422
Install security update from vendor's repository.