CVE-2026-89475
power: supply: bq24257: fix use-after-free on remove
- State
- Published
- Severity
- Not scored
- Published
- Sep 11, 2026
- Updated
- Oct 30, 2026
- Reserved
- Sep 11, 2026
Description
In the Linux kernel, the following vulnerability has been resolved:
power: supply: bq24257: fix use-after-free on remove
The STAT-pin interrupt is devm-managed, so it stays armed until the devm cleanup that runs after remove() returns. remove() cancels bq->iilimit_setup_work while the threaded handler can still fire; that handler reschedules the work and dereferences bq, so the work runs against freed memory once devm frees bq.
Make the delayed work device-managed with devm_delayed_work_autocancel(), registered before the interrupt request. The devm cleanup then releases the interrupt first, so the handler can no longer reschedule the work, and cancels the work before bq is freed. The explicit cancel_delayed_work_sync() in remove() is no longer needed and is dropped.
Found by static analysis.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
LinuxLinux |
|
LinuxLinux |
|
References
- https://git.kernel.org/stable/c/9aace29bbcfa64450c53773ed2f20e95987b3690
- https://git.kernel.org/stable/c/9d77fd7dd9a3ad57f7655c5264b503b85adbb7b8
- https://git.kernel.org/stable/c/a279e64c907f5638bb34cb8e2c9285798cf5f690
- https://git.kernel.org/stable/c/6d2eb93975c07b0169a3287efc1ae3b60cf52d8e
- https://git.kernel.org/stable/c/861ec73ce86e2ca18082cc7be4f140a5bbdf1428
- https://git.kernel.org/stable/c/f495808cdd6d9576965787cf6d9737d0b0e86b73
- https://git.kernel.org/stable/c/47ccbad210f48721c30d69d65b83dc9fff919ca9
- https://git.kernel.org/stable/c/9d34c9d660c3d0931d2cc749c46c47cf31f96e48
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.