Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-43467
Published: May 8, 2026
Vulnerability identifier: #VU130717
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-2026-43467
CWE-ID: CWE-703
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 resource handling in the net/mlx5 switchdev mode transition logic when moving a device to switchdev mode on hardware without IPsec support. A local user can trigger a switchdev mode change to cause a denial of service.
The issue occurs when the driver attempts to clean up IPsec resources even though the device does not support IPsec.
How to mitigate CVE-2026-43467
Install security update from vendor's repository.