NULL Pointer Dereference in Linux kernel - CVE-2026-23349
Published: March 25, 2026
Vulnerability identifier: #VU124492
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-2026-23349
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 null pointer handling in the HID subsystem's pidff driver when processing force feedback effects. A local user can trigger a NULL pointer dereference by manipulating condition effect bits, leading to a system crash.
Exploitation requires access to the force feedback interface, typically available to local users with device permissions.
How to mitigate CVE-2026-23349
Install security update from vendor's repository.