{"id":17470,"date":"2026-09-05T02:31:09","date_gmt":"2026-09-04T18:31:09","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80890"},"modified":"2026-09-05T02:31:09","modified_gmt":"2026-09-04T18:31:09","slug":"cve-2026-80890","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80890","title":{"rendered":"CVE-2026-80890 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: reject stale co"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>sctp: reject stale cookies with mismatched verification tags<\/p>\n<p>sctp_unpack_cookie() skips cookie expiration checks whenever an<br \/>\nassociation already exists.  This is broader than the exception in<br \/>\nRFC 9260 Section 5.2.4.<\/p>\n<p>For an existing association, Section 5.2.4 permits an expired State<br \/>\nCookie only when both Verification Tags in the cookie match the current<br \/>\nassociation.  Otherwise, the packet SHOULD be discarded and a Stale<br \/>\nCookie ERROR MUST be sent.<\/p>\n<p>The broad check lets an expired Action A restart cookie reach<br \/>\nsctp_sf_do_dupcook_a().  In a runtime test with the default 60 second<br \/>\ncookie lifetime, replaying such a cookie after 65 seconds returned a<br \/>\nCOOKIE-ACK and restarted the association.<\/p>\n<p>Check cookie expiration unless both Verification Tags match.  This<br \/>\npreserves the Action D exception for a lost COOKIE ACK while rejecting<br \/>\nexpired cookies in all other cases.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>sctp: reject stale cookies with mismatched verification tags<\/p>\n<p>sctp_unpack_cookie() skips cookie expiration checks whenever an<br \/>\nassoc<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-17470","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/17470","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=17470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}