Race condition in Linux kernel - CVE-2026-90383
Published: September 18, 2026
Vulnerability identifier: #VU151094
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90383
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to trigger an unsafe page-table walk.
The vulnerability exists due to improper synchronization in the GRU TLB miss handler when handling a GRU TLB miss in interrupt context. A local user can trigger a GRU TLB miss to trigger an unsafe page-table walk.
Affected software
Linux kernel
How to mitigate CVE-2026-90383
Install security update from vendor's repository.