CVE-2026-53308 is a vulnerability in Linux Kernel
Published on June 26, 2026
power: supply: max77705: Free allocated workqueue and fix removal order
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()) status, thus there
is no point to run it for memory reclaim. Note that dev_name() is not
directly used in second argument to prevent possible unlikely parsing
any "%" character in device name as format.
Products Associated with CVE-2026-53308
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Affected Versions
Linux:- Version a6a494c8e3ce1fe84aac538b087a4cab868ed83f and below b98e4e57e34d099a8f846fa54749654082975ea0 is affected.
- Version a6a494c8e3ce1fe84aac538b087a4cab868ed83f and below 1e668baadefb16e81269dbfebf3ffc2672e3a3bb is affected.
- Version 6.15 is affected.
- Before 6.15 is unaffected.
- Version 7.0.10, <= 7.0.* is unaffected.
- Version 7.1, <= * is unaffected.