Deadlock in Linux kernel - CVE-2026-43468
Published: May 8, 2026
Vulnerability identifier: #VU130718
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-2026-43468
CWE-ID: CWE-833
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 improper locking in net/mlx5 eswitch event handling when processing eswitch mode changes and queued work items. A local user can trigger eswitch mode changes to cause a denial of service.
How to mitigate CVE-2026-43468
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/0de867f6e34eae6907b367fd152c55e61cb98608
- https://git.kernel.org/stable/c/3c7313cb41b1b427078440364d2f042c276a1c0b
- https://git.kernel.org/stable/c/4a7838bebc38374f74baaf88bf2cf8d439a92923
- https://git.kernel.org/stable/c/90e7e5d14d0bd25ffd019a3aa39d9f1c05fedbe1
- https://git.kernel.org/stable/c/957d2a58f7f8ebcbdd0a85935e0d2675134b890d
- https://git.kernel.org/stable/c/aed763abf0e905b4b8d747d1ba9e172961572f57