Memory leak in Linux kernel - CVE-2026-89473
Published: September 12, 2026
Vulnerability identifier: #VU149338
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89473
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to leak a power_supply reference.
The vulnerability exists due to improper resource lifecycle management in bq25890_fw_probe() when handling secondary charger references during probe failures or driver detach. A local user can trigger a later probe failure or driver detachment to leak a power_supply reference.
Affected software
Linux kernel
How to mitigate CVE-2026-89473
Install security update from vendor's repository.