Impact
The Linux kernel contains a flaw where raw event callbacks for HID devices can dereference a NULL pointer if a device has not been claimed. The missing guard causes the kernel to crash, resulting in a denial‑of‑service condition. This is a classic null dereference issue classified as CWE‑414.
Affected Systems
All Linux kernel installations that have not incorporated commit 2ff5baa9b527 are affected. The issue was present in drivers such as appleir and other in‑tree HID drivers; any distribution using a kernel older than the supplied fix may be vulnerable.
Risk and Exploitability
The CVSS score of 5.5 reflects a moderate severity, while the EPSS score of less than 1% indicates a low probability of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog. Based on the description it is inferred that an attacker would need to present a malformed or unclaimed HID device to the system, potentially through local or remote attachment of such a device, to trigger the crash.
OpenCVE Enrichment