CVE-2026-89797power: supply: ab8500_fg: fix use-after-free on remove
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 89% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 5 days later
· 5 days later
Published
- 33 days later
· 33 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 13151631b5bd06a1511353bb221079bbd76606c3 – < c2ce9b8f325f522e10e4d262b37ae49deb83e79b
- affected 13151631b5bd06a1511353bb221079bbd76606c3 – < c660c017dec1fd7cd88e1103c5ae1aae6ce636bf
- affected 13151631b5bd06a1511353bb221079bbd76606c3 – < 013731074ab6a8d11ec209eee64c5b2656954479
- affected 13151631b5bd06a1511353bb221079bbd76606c3 – < 75b1e88d34254f4fb7753345e21bfee47abddd7f
- affected 3.4
- unaffected < 3.4
- unaffected 6.12.112 – ≤ 6.12.*
- unaffected 6.18.51 – ≤ 6.18.*
- unaffected 7.2.5 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References4
- https://git.kernel.org/stable/c/c2ce9b8f325f522e10e4d262b37ae49deb83e79b (opens in a new tab)
- https://git.kernel.org/stable/c/c660c017dec1fd7cd88e1103c5ae1aae6ce636bf (opens in a new tab)
- https://git.kernel.org/stable/c/013731074ab6a8d11ec209eee64c5b2656954479 (opens in a new tab)
- https://git.kernel.org/stable/c/75b1e88d34254f4fb7753345e21bfee47abddd7f (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-80397 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-89797)Record last updated .