CVE-2026-23349

A flaw was found in the Linux kernel's Human Interface Device (HID) subsystem, specifically within the pidff module. This vulnerability occurs because not all conditional effect bits were properly cleared, leading to null pointer dereferences. A local attacker could potentially exploit this flaw to cause a system crash, resulting in a denial of service.

This flaw affects systems using force feedback devices with the pidff (PID Force Feedback) HID driver. Incomplete clearing of conditional effect bits in ffbit causes NULL pointer dereferences. Triggering requires a force feedback capable device and specific force feedback effect operations.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.