CVE-2026-89797power: supply: ab8500_fg: fix use-after-free on remove
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: ab8500_fg: fix use-after-free on remove ab8500_fg_remove() destroys the driver workqueue while the threaded interrupt handlers are still armed; they are devm-managed and freed only after ->remove() returns, so a handler that fires in that window queues work on the freed workqueue. Tear the workqueue down through devm instead, registering its cleanup after the power supply and before the interrupt requests. devm then frees the interrupts first, so the handlers can no longer queue work, before disabling the delayed and plain work items and destroying the workqueue. Disabling the items, rather than cancelling them, keeps them disabled so no producer (including the power-supply external_power_changed callback) can requeue them. Found by an in-house static analysis tool.
- 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
- Oct 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 13151631b5bd06a1511353bb221079bbd76606c3 before c2ce9b8f325f522e10e4d262b37ae49deb83e79b; from 13151631b5bd06a1511353bb221079bbd76606c3 before c660c017dec1fd7cd88e1103c5ae1aae6ce636bf; from 13151631b5bd06a1511353bb221079bbd76606c3 before 013731074ab6a8d11ec209eee64c5b2656954479; 13151631b5bd06a1511353bb221079bbd76606c3 builds before 75b1e88d34254f4fb7753345e21bfee47abddd7f | CNA record |
References
- https://git.kernel.org/stable/c/c2ce9b8f325f522e10e4d262b37ae49deb83e79b
- https://git.kernel.org/stable/c/c660c017dec1fd7cd88e1103c5ae1aae6ce636bf
- https://git.kernel.org/stable/c/013731074ab6a8d11ec209eee64c5b2656954479
- https://git.kernel.org/stable/c/75b1e88d34254f4fb7753345e21bfee47abddd7f
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.