In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF<\/p>\n
The 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).<\/p>\n
The 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.<\/p>\n
Call 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).<\/p>\n
This issue was found by an in-house static analysis tool.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF<\/p>\n
The atlas driver requests its hardware data-ready IRQ<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-24625","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/24625","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=24625"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24625"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24625"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}