{"id":24580,"date":"2026-09-16T20:32:30","date_gmt":"2026-09-16T12:32:30","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89893"},"modified":"2026-09-16T20:32:30","modified_gmt":"2026-09-16T12:32:30","slug":"cve-2026-89893","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89893","title":{"rendered":"CVE-2026-89893 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cx23885: cance"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>media: cx23885: cancel NetUP CI work before teardown<\/p>\n<p>netup_ci_exit() frees a netup_ci_state while its work item,<br \/>\nnetup_read_ci_status(), may still be pending or running on the system<br \/>\nworkqueue. The worker obtains the state with container_of() and<br \/>\ndereferences it, so it must not outlive the state.<\/p>\n<p>netup_ci_init() queues the initial status read, and CI GPIO interrupts<br \/>\nsubsequently queue the same work from netup_ci_slot_status(). During<br \/>\nremove, cx23885_finidev() calls free_irq() before the CI device is<br \/>\nunregistered. free_irq() prevents further IRQ handlers from running,<br \/>\nbut does not drain work queued previously, so the worker can run after<br \/>\nnetup_ci_exit() frees the state.<\/p>\n<p>Call cancel_work_sync() before dvb_ca_en50221_release() and kfree().<\/p>\n<p>This issue was found by an in-house static analysis tool.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>media: cx23885: cancel NetUP CI work before teardown<\/p>\n<p>netup_ci_exit() frees a netup_ci_state while its work item,<br \/>\nnetup_read_ci_sta<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-24580","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/24580","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=24580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}