5.5

CVE-2026-53308

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
LinuxLinux Kernel Version >= 6.15 < 7.0.10
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.1% 0.011
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

https://git.kernel.org/stable/c/b98e4e57e34d099a8f846fa54749654082975ea0
Patch
https://git.kernel.org/stable/c/1e668baadefb16e81269dbfebf3ffc2672e3a3bb
Patch