Use-after-free in Linux kernel - CVE-2026-90013
Published: September 16, 2026
Vulnerability identifier: #VU150282
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90013
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a use-after-free kernel crash.
The vulnerability exists due to a use-after-free in tracefs options files when an options file is opened while another task removes its associated tracing instance. A local user can open an options file for a tracing instance and trigger removal of that instance to cause a use-after-free kernel crash.
Affected software
Linux kernel
How to mitigate CVE-2026-90013
Install security update from vendor's repository.