CVE-2026-43140

A flaw was found in the Linux kernel's HID (Human Interface Device) magicmouse driver. A local attacker with physical access could exploit this vulnerability by connecting a specially crafted USB device. This device could send a malformed report descriptor, causing the msc->input to remain uninitialized, which leads to a system crash. This issue results in a Denial of Service (DoS) for the affected system.

Red Hat acknowledges the upstream Linux kernel correction for «HID» as described in COMMENT_ZERO. Fixes are delivered through standard kernel errata for supported products. Operational exposure depends on whether this subsystem or driver is active in your configuration.

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.