CVE-2026-89474power: supply: bq256xx: drain usb_work before freeing the charger
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: power: supply: bq256xx: drain usb_work before freeing the charger The USB-PHY notifier queues usb_work, whose handler calls power_supply_changed(bq->charger). The reset devm action only unregisters the notifier and was registered before the power supplies, so devm frees bq->charger on unwind before the action runs; a usb_work still queued can then dereference it. Register the reset action after the power supplies, so it unregisters the notifiers and drains usb_work before the supplies are released. Initialize usb_work and obtain the PHY references before registering the notifiers, so the worker cannot run before the supplies exist. Found by static analysis.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 32e4978bb920d047fe5de3ea42d176f267c01f63 builds before 9dcfdf6c598301b278f0b3490eb2bf4f600524e2; from 32e4978bb920d047fe5de3ea42d176f267c01f63 before fd08d4dbbec07a44f01b0ddb041912be0dc88f8c; 32e4978bb920d047fe5de3ea42d176f267c01f63 builds before 2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8; 32e4978bb920d047fe5de3ea42d176f267c01f63 builds before 9a467bd1e6811011026ad4c8de701b940d88a00c; 32e4978bb920d047fe5de3ea42d176f267c01f63 builds before 9e1aba34df9a87d53460888e05718717c0f69343; from 32e4978bb920d047fe5de3ea42d176f267c01f63 before c8addb842ae8dcf69c15fc976e33e3bd538a41d7; 32e4978bb920d047fe5de3ea42d176f267c01f63 builds before 2dd6cd823777bea6d9a880a12a92a73ec76aee0b | CNA record |
References
- https://git.kernel.org/stable/c/9dcfdf6c598301b278f0b3490eb2bf4f600524e2
- https://git.kernel.org/stable/c/fd08d4dbbec07a44f01b0ddb041912be0dc88f8c
- https://git.kernel.org/stable/c/2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8
- https://git.kernel.org/stable/c/9a467bd1e6811011026ad4c8de701b940d88a00c
- https://git.kernel.org/stable/c/9e1aba34df9a87d53460888e05718717c0f69343
- https://git.kernel.org/stable/c/c8addb842ae8dcf69c15fc976e33e3bd538a41d7
- https://git.kernel.org/stable/c/2dd6cd823777bea6d9a880a12a92a73ec76aee0b
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.