{"id":11262,"date":"2026-09-04T18:53:07","date_gmt":"2026-09-04T10:53:07","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74688"},"modified":"2026-09-04T18:53:07","modified_gmt":"2026-09-04T10:53:07","slug":"cve-2026-74688","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74688","title":{"rendered":"CVE-2026-74688 [CRITICAL] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: clear control c"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>sctp: clear control chunk transport if it is being removed<\/p>\n<p>sctp_make_heartbeat_ack() caches the destination transport in<br \/>\nchunk-&gt;transport without taking a reference. When src_out_of_asoc_ok is<br \/>\nenabled, the HEARTBEAT ACK may remain queued on control_chunk_list instead<br \/>\nof being transmitted immediately.<\/p>\n<p>If the peer transport is removed while the chunk is still queued,<br \/>\nsctp_assoc_rm_peer() drops the transport and schedules it for RCU freeing,<br \/>\nbut only clears cached transport pointers in out_chunk_list.  The queued<br \/>\ncontrol chunk therefore retains a dangling transport pointer.<\/p>\n<p>Once an ASCONF_ACK clears the suppression and the queued control chunk is<br \/>\ntransmitted, SCTP dereferences the stale transport pointer, leading to a<br \/>\nuse-after-free.<\/p>\n<p>Fix this by also clearing chunk-&gt;transport for queued control chunks in<br \/>\ncontrol_chunk_list when removing the transport.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>sctp: clear control chunk transport if it is being removed<\/p>\n<p>sctp_make_heartbeat_ack() caches the destination transport in<br \/>\nchunk-&gt;tr<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-11262","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/11262","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=11262"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11262"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11262"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}