Race condition in Linux kernel - CVE-2026-43119
Published: May 7, 2026
Vulnerability identifier: #VU130646
CSH Severity: Low
CVSS v4.0: 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-2026-43119
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a data race in hdev->req_status handling in the Bluetooth hci_sync subsystem when processing concurrent command synchronization operations across workqueues and event completion paths. A local user can trigger concurrent operations to cause a denial of service.
The issue arises because accesses occur from different workqueues and completion or abort paths that can run concurrently on different CPUs.
How to mitigate CVE-2026-43119
Install security update from vendor's repository.