CVE-2025-21923
kernel: HID: hid-steam: Fix use-after-free when detaching device
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 1, 2025
Updated · September 13, 2026
Description
A flaw was found in the Linux kernel's hid-steam module. This vulnerability occurs when a hid-steam device is detached, as a timing issue in the cleanup process can lead to a use-after-free condition. A local attacker with low privileges could exploit this flaw. Successful exploitation could result in arbitrary code execution, allowing the attacker to gain full control of the system, or cause a system crash (denial of service).
CVSS score applicability
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
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 · Use After Free