CVE-2026-89475

/// Technical 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.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References