Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: iio: light: gp2ap020a00f: drain irq_work after free_irq The threaded IRQ handler queues data->work through irq_work_queue() so the trigger is polled from a per-CPU context. free_irq() does not flush an irq_work the handler already queued, so after gp2ap020a00f_remove() returns that work may still run and call iio_trigger_poll() on data->trig, which the devm cleanup has already freed, causing a use-after-free. Add irq_work_sync(&data->work) after free_irq() in remove() and in the probe error path, mirroring commit 78601726d4a5 ("iio: trigger: sysfs: fix use-after-free on remove"). Found by an in-house static analysis tool, confirmed by manual review.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected bf29fbeaa13d3350ca71df70c705d8b883c45692 before 85c20d1cf3f01a506605a16c2f9ce23b9c8b114f; affected bf29fbeaa13d3350ca71df70c705d8b883c45692 before a36814b9fe00970116d30c3143d81e7425c4d334; affected bf29fbeaa13d3350ca71df70c705d8b883c45692 before cc71400bc965c0d3894a38ead3d71243400c2d5e; affected bf29fbeaa13d3350ca71df70c705d8b883c45692 before a1769877ff52a4f1bfb9ca535d1b5113808bd602; affected bf29fbeaa13d3350ca71df70c705d8b883c45692 before 63213927b141085b6c8719b8037dab3074b7e0fe |
| Linux / Linux | affected 3.13; unaffected 0 before 3.13; unaffected 6.6.160 through 6.6.*; unaffected 6.12.113 through 6.12.*; unaffected 6.18.56 through 6.18.*; unaffected 7.2.10 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/85c20d1cf3f01a506605a16c2f9ce23b9c8b114f
- https://git.kernel.org/stable/c/a36814b9fe00970116d30c3143d81e7425c4d334
- https://git.kernel.org/stable/c/cc71400bc965c0d3894a38ead3d71243400c2d5e
- https://git.kernel.org/stable/c/a1769877ff52a4f1bfb9ca535d1b5113808bd602
- https://git.kernel.org/stable/c/63213927b141085b6c8719b8037dab3074b7e0fe