CVE-2026-89475: vulnerability in Linux
power: supply: bq24257: fix use-after-free on remove
Published · Updated
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 90% of all CVEs
observed exploitation
nono source reports it
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.
Affected products
Linux · LinuxRelated CVEs — Linux
In the same product, most dangerous first.
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References
https://git.kernel.org/stable/c/47ccbad210f48721c30d69d65b83dc9fff919ca9https://git.kernel.org/stable/c/6d2eb93975c07b0169a3287efc1ae3b60cf52d8ehttps://git.kernel.org/stable/c/861ec73ce86e2ca18082cc7be4f140a5bbdf1428https://git.kernel.org/stable/c/9d34c9d660c3d0931d2cc749c46c47cf31f96e48https://git.kernel.org/stable/c/9d77fd7dd9a3ad57f7655c5264b503b85adbb7b8https://git.kernel.org/stable/c/a279e64c907f5638bb34cb8e2c9285798cf5f690https://git.kernel.org/stable/c/f495808cdd6d9576965787cf6d9737d0b0e86b73