Use-after-free in Linux kernel - CVE-2026-89465
Published: September 12, 2026
Vulnerability identifier: #VU149346
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89465
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to access freed rt9455_info memory.
The vulnerability exists due to improper delayed-work cancellation in RT9455 charger driver teardown handling when delayed work is pending during device removal or probe error cleanup. A local user can race delayed work with teardown to access freed rt9455_info memory.
The threaded IRQ handler can queue delayed work, and batt_presence_work can requeue itself or queue max_charging_time_work.
Affected software
Linux kernel
How to mitigate CVE-2026-89465
Install security update from vendor's repository.