Memory leak in Linux kernel - CVE-2026-90340
Published: September 18, 2026
Vulnerability identifier: #VU151145
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90340
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause a denial of service.
The vulnerability exists due to a memory leak in pinctrl_generic_to_map() when handling errors while processing device-tree configuration. A local privileged user can trigger an error after partially allocated pinctrl maps are created to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-90340
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3