NULL pointer dereference in Linux kernel - CVE-2026-31443
Published: April 24, 2026
Vulnerability identifier: #VU127710
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-2026-31443
CWE-ID: CWE-476
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 handling of unallocated memory in the idxd driver event log handling when processing hardware errors that trigger function level reset. A local user can trigger such an error condition to cause a denial of service.
Only systems where reporting errors to the event log is not supported by the hardware are vulnerable.
How to mitigate CVE-2026-31443
Install security update from vendor's repository.