{"id":5333,"date":"2026-09-04T18:47:45","date_gmt":"2026-09-04T10:47:45","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-68119"},"modified":"2026-09-04T18:47:45","modified_gmt":"2026-09-04T10:47:45","slug":"cve-2026-68119","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-68119","title":{"rendered":"CVE-2026-68119 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: initialize stand"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>tcp: initialize standalone TCP-AO response padding<\/p>\n<p>tcp_v4_send_ack() and tcp_v6_send_response() construct standalone TCP<br \/>\nresponses with TCP-AO options.  The option length carries the actual MAC<br \/>\nlength, but the TCP header length includes the option rounded up to a<br \/>\nfour-byte boundary.<\/p>\n<p>tcp_ao_hash_hdr() writes the MAC only.  Thus, when the MAC length is not<br \/>\nfour-byte aligned, the one to three bytes after the MAC are left<br \/>\nuninitialized and may be transmitted.  For the normal TCP-AO hashing<br \/>\nmode, those bytes also have to be initialized before computing the MAC.<\/p>\n<p>Initialize only the alignment padding in the TCP-AO branches, before<br \/>\nhashing the header.  Use TCPOPT_NOP, as in the normal TCP-AO output path.<br \/>\nThis avoids adding work to non-AO TCP responses while preserving a valid<br \/>\nauthenticated header.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>tcp: initialize standalone TCP-AO response padding<\/p>\n<p>tcp_v4_send_ack() and tcp_v6_send_response() construct standalone TCP<br \/>\nresponses<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-5333","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/5333","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=5333"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5333"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}