{"id":41214,"date":"2026-10-19T00:32:38","date_gmt":"2026-10-18T16:32:38","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98742"},"modified":"2026-10-19T00:32:38","modified_gmt":"2026-10-18T16:32:38","slug":"cve-2026-98742","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98742","title":{"rendered":"CVE-2026-98742 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: seq: Serialize"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ALSA: seq: Serialize compat port-info ioctls<\/p>\n<p>The native sequencer ioctl path serializes handler calls with<br \/>\nclient-&gt;ioctl_mutex, but the translated port-info compat path invokes the<br \/>\nsame handlers through snd_seq_kernel_client_ctl() without taking that<br \/>\nmutex.<\/p>\n<p>This lets concurrent compat CREATE_PORT requests pass the port-count<br \/>\ncheck before any request reaches the serialized insertion. The computed<br \/>\ninteger port index can then exceed the address field range and wrap to an<br \/>\nexisting index. Subsequent subscriber teardown can resolve the duplicate<br \/>\naddress to the wrong port and access a freed subscriber.<\/p>\n<p>Take ioctl_mutex while dispatching converted port-info requests, matching<br \/>\nthe native ioctl path. All translated port-info commands share this<br \/>\nhelper, so their accesses to the client port state are serialized as<br \/>\nwell.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ALSA: seq: Serialize compat port-info ioctls<\/p>\n<p>The native sequencer ioctl path serializes handler calls with<br \/>\nclient-&gt;ioctl_mutex, bu<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-41214","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/41214","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=41214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}