{"id":"CVE-2026-89938","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-89938","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF\n\nThe atlas driver requests its hardware…","details":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF\n\nThe atlas driver requests its hardware data-ready IRQ with\ndevm_request_threaded_irq(); its threaded handler queues an irq_work,\natlas_work_handler(), that calls iio_trigger_poll(data->trig).\n\nThe IRQ is devm-managed, so free_irq() runs from the devres unwind after\natlas_remove() returns without flushing that irq_work.  Once a buffer is\nenabled, conversion-complete IRQs keep firing and queueing it; a pending\nirq_work can therefore run after the unwind has freed atlas_data/indio_dev\nand the trigger, when atlas_work_handler() derives the atlas_data pointer\nvia container_of() and dereferences data->trig, a use-after-free.\n\nCall iio_trigger_poll_nested() directly from the threaded handler instead\nof bouncing through irq_work.  free_irq() then drains the threaded handler,\nclosing the window; other iio drivers with a threaded data-ready IRQ do the\nsame (e.g. bmi270).\n\nThis issue was found by an in-house static analysis tool.","published":"2026-09-16T11:17:03.323","modified":"2026-09-16T11:17:03.323","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2071624c3d0f497ca91da78858e6f30d7112fea6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/30b0d44c978bbc857bd68b71dab371805653de70"},{"type":"WEB","url":"https://git.kernel.org/stable/c/91e12b0fbd7047d02bf4ef4dbc491b9ef0159250"},{"type":"WEB","url":"https://git.kernel.org/stable/c/be61c8c6252671ecf1fee0ad90f87669e0be1e20"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f64b437641b5a70c18bb0fd38da2b69d8926c871"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-16T11:17:03.323"}}