{"id":21444,"date":"2026-09-12T04:31:11","date_gmt":"2026-09-11T20:31:11","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89522"},"modified":"2026-09-12T04:31:11","modified_gmt":"2026-09-11T20:31:11","slug":"cve-2026-89522","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89522","title":{"rendered":"CVE-2026-89522 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: staging\/ipu7:"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>media: staging\/ipu7: fix async notifier UAF on probe error path<\/p>\n<p>isys_register_devices() registers the V4L2 async notifier via<br \/>\nisys_notifier_init(). If a subsequent probe step such as<br \/>\nisys_fw_log_init() fails, isys_probe() jumps to the out_cleanup label<br \/>\nwhich only calls isys_unregister_devices(). That helper tears down the<br \/>\nvideo devices, subdevices, V4L2 device and media device, but never<br \/>\nunregisters or cleans up the async notifier.<\/p>\n<p>As a result the notifier stays chained in the global notifier_list while<br \/>\nthe enclosing struct ipu7_isys is freed by devres, leading to list<br \/>\ncorruption and a use-after-free the next time the list is walked.<\/p>\n<p>The remove path already does the right thing by calling<br \/>\nisys_notifier_cleanup() before isys_unregister_devices(). Mirror that on<br \/>\nthe probe error path so the notifier is unregistered and cleaned up<br \/>\nbefore the device is torn down.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>media: staging\/ipu7: fix async notifier UAF on probe error path<\/p>\n<p>isys_register_devices() registers the V4L2 async notifier via<br \/>\nisys<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21444","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21444","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=21444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21444"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}