CVE-2026-89938iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF
- 7.8HighCVSS base score
- 0.17%Exploitation in 30 daysEPSS · top 94% 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: iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF The atlas driver requests its hardware data-ready IRQ with devm_request_threaded_irq(); its threaded handler queues an irq_work, atlas_work_handler(), that calls iio_trigger_poll(data->trig). The IRQ is devm-managed, so free_irq() runs from the devres unwind after atlas_remove() returns without flushing that irq_work. Once a buffer is enabled, conversion-complete IRQs keep firing and queueing it; a pending irq_work can therefore run after the unwind has freed atlas_data/indio_dev and the trigger, when atlas_work_handler() derives the atlas_data pointer via container_of() and dereferences data->trig, a use-after-free. Call iio_trigger_poll_nested() directly from the threaded handler instead of bouncing through irq_work. free_irq() then drains the threaded handler, closing the window; other iio drivers with a threaded data-ready IRQ do the same (e.g. bmi270). This issue was 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.17% · top 94% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 7103b99b031cb0ff6979331757bfc4893f37ae9e – < f64b437641b5a70c18bb0fd38da2b69d8926c871
- affected 7103b99b031cb0ff6979331757bfc4893f37ae9e – < 91e12b0fbd7047d02bf4ef4dbc491b9ef0159250
- affected 7103b99b031cb0ff6979331757bfc4893f37ae9e – < 2071624c3d0f497ca91da78858e6f30d7112fea6
- affected 7103b99b031cb0ff6979331757bfc4893f37ae9e – < 30b0d44c978bbc857bd68b71dab371805653de70
- affected 7103b99b031cb0ff6979331757bfc4893f37ae9e – < be61c8c6252671ecf1fee0ad90f87669e0be1e20
- affected 4.8
- unaffected < 4.8
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.51 – ≤ 6.18.*
- unaffected 7.2.5 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References5
- https://git.kernel.org/stable/c/f64b437641b5a70c18bb0fd38da2b69d8926c871 (opens in a new tab)
- https://git.kernel.org/stable/c/91e12b0fbd7047d02bf4ef4dbc491b9ef0159250 (opens in a new tab)
- https://git.kernel.org/stable/c/2071624c3d0f497ca91da78858e6f30d7112fea6 (opens in a new tab)
- https://git.kernel.org/stable/c/30b0d44c978bbc857bd68b71dab371805653de70 (opens in a new tab)
- https://git.kernel.org/stable/c/be61c8c6252671ecf1fee0ad90f87669e0be1e20 (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-2026-80538 (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-2026-89938)Record last updated .