Use-after-free in Linux kernel - CVE-2026-89625
Published: September 12, 2026
Vulnerability identifier: #VU149187
CSH Severity: Low
CVSS v4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89625
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause a use-after-free condition.
The vulnerability exists due to use-after-free in GHL poke timer handling in the hid-sony driver when handling driver unbind while a GHL poke URB is in flight. A local privileged user can trigger a driver unbind while the GHL poke URB is in flight to cause a use-after-free condition.
The issue affects Guitar Hero Live dongles, where a URB completion can re-arm the timer after driver teardown.
Affected software
Linux kernel
How to mitigate CVE-2026-89625
Install security update from vendor's repository.