CVE-2025-39760

A flaw was found in the Linux kernel's USB core configuration parsing. Specifically, the usb_parse_ss_endpoint_companion() function incorrectly checks the descriptor type before its length, which can lead to reading data beyond the intended buffer. This out-of-bounds read vulnerability could allow a local attacker to cause a system crash, resulting in a Denial of Service (DoS).

This Moderate impact flaw in the Linux kernel's USB core configuration parsing allows a local attacker with some special group privilege to trigger an out-of-bounds read by manipulating USB device core configuration options. This can lead to a system crash, resulting in a Denial of Service.

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.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.