In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
hwmon: (gpio-fan) Fix use-after-free in alarm work<\/p>\n
fan_alarm_irq_handler() queues fan_data->alarm_work, but nothing
\ncancels it. fan_alarm_notify() dereferences fan_data and its hwmon
\ndevice. On unbind, devres frees the interrupt, which only waits for
\nthe handler itself, and then releases the hwmon device and fan_data,
\nso a pending fan_alarm_notify() can run after those frees.<\/p>\n
Replace INIT_WORK() with devm_work_autocancel(), registered before
\ndevm_request_irq(). The devres cleanup then frees the interrupt
\nfirst, so no new work can be queued, and cancels the work while
\nfan_data and the hwmon device are still alive.<\/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
hwmon: (gpio-fan) Fix use-after-free in alarm work<\/p>\n
fan_alarm_irq_handler() queues fan_data->alarm_work, but nothing
\ncancels it. f<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-29014","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/29014","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=29014"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29014"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29014"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}