Race condition in Linux kernel - CVE-2026-43220
Published: May 7, 2026
Vulnerability identifier: #VU130518
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-43220
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a race condition in the amd iommu tlb invalidation handling when processing concurrent tlb invalidations. A local user can trigger concurrent invalidation activity to cause a denial of service.
The issue can cause completion waits to time out because command completion wait operations may be queued out of sequence.
Remediation
Install security update from vendor's repository.