{"id":41266,"date":"2026-10-19T00:32:54","date_gmt":"2026-10-18T16:32:54","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98794"},"modified":"2026-10-19T00:32:54","modified_gmt":"2026-10-18T16:32:54","slug":"cve-2026-98794","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98794","title":{"rendered":"CVE-2026-98794 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: filter some fla"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ipvs: filter some flags received in the backup server<\/p>\n<p>While the IPVS SYNC protocol is not secure by design<br \/>\nwe can still protect the backup server from messages that<br \/>\ncan wreak havoc.<\/p>\n<p>This commit addresses problems from received connection flags<br \/>\nor their combinations. We now drop messages as follows:<\/p>\n<p>1. the NO_CPORT+TEMPLATE combination allows lookups for normal<br \/>\nconnections to hit template which can break in many ways.<br \/>\nWhile the master does not sync connections with NO_CPORT flag,<br \/>\ni.e. before they are established, we still accept NO_CPORT<br \/>\nwithout TEMPLATE.<\/p>\n<p>2. ONE_PACKET: it is not sent by master, so we do not<br \/>\nexpect it in backup. Before now it was ignored by<br \/>\nIP_VS_CONN_F_BACKUP_MASK for protocol v1 while protocol<br \/>\nv0 created connections that are not hashed and dropped<br \/>\nimmediately. Better to apply the IP_VS_CONN_F_BACKUP_MASK<br \/>\nalso to the flags from v0 messages for consistency with v1.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ipvs: filter some flags received in the backup server<\/p>\n<p>While the IPVS SYNC protocol is not secure by design<br \/>\nwe can still protect th<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-41266","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/41266","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=41266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}