CVE-2026-53308

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

power: supply: max77705: Free allocated workqueue and fix removal order

Use devm interface for allocating workqueue to fix two bugs at the same

time:

1. Driver leaks the memory on remove(), because the workqueue is not

destroyed.

2. Driver allocates workqueue and then registers interrupt handlers

with devm interface. This means that probe error paths will not use a

reversed order, but first destroy the workqueue and then, via devm

release handlers, free the interrupt.

The interrupt handler schedules work on this exact workqueue, thus if

interrupt is hit in this short time window - after destroying

workqueue, but before devm() frees the interrupt - the schedulled

work will lead to use of freed memory.

Change is not equivalent in the workqueue itself: use non-legacy API

which does not set (__WQ_LEGACY | WQ_MEM_RECLAIM). The workqueue is

used to update power supply (power_supply_changed())

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

References