{"id":21545,"date":"2026-09-12T04:31:20","date_gmt":"2026-09-11T20:31:20","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89623"},"modified":"2026-09-12T04:31:20","modified_gmt":"2026-09-11T20:31:20","slug":"cve-2026-89623","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89623","title":{"rendered":"CVE-2026-89623 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nHID: mcp2221: stop de"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>HID: mcp2221: stop device IO before hid_hw_stop<\/p>\n<p>Quiesce device IO at the start of the devm cleanup callback<br \/>\nmcp2221_hid_unregister() so that incoming HID reports cannot race with<br \/>\nhardware teardown during probe failure or device removal, addressing a<br \/>\npotential use-after-free.<\/p>\n<p>Guard the call to hid_device_io_stop() with io_started. On normal<br \/>\nremoval hid_device_remove() has already cleared io_started before the<br \/>\ndevres group is released, so an unconditional call would otherwise hit<br \/>\nthe !io_started path and emit a spurious &#8220;io already stopped&#8221; warning<br \/>\non every removal. The guard preserves the probe-failure balancing,<br \/>\nwhere io_started is still set after hid_device_io_start(), while<br \/>\nstaying silent on the normal removal path.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>HID: mcp2221: stop device IO before hid_hw_stop<\/p>\n<p>Quiesce device IO at the start of the devm cleanup callback<br \/>\nmcp2221_hid_unregister<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21545","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21545","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=21545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21545"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}