Race condition in Linux kernel - CVE-2026-92485
Published: September 18, 2026
Vulnerability identifier: #VU151035
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-2026-92485
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause a kernel warning.
The vulnerability exists due to improper synchronization and flag handling in the BPF trampoline flag management logic when attaching multiple fexit programs targeting a tail-call-reachable BPF program. A local privileged user can attach fexit programs and close an attached fexit link to cause a kernel warning.
Affected software
Linux kernel
How to mitigate CVE-2026-92485
Install security update from vendor's repository.