{"id":17076,"date":"2026-09-05T02:30:43","date_gmt":"2026-09-04T18:30:43","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-81665"},"modified":"2026-09-05T02:30:43","modified_gmt":"2026-09-04T18:30:43","slug":"cve-2026-81665","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-81665","title":{"rendered":"CVE-2026-81665 [HIGH] &#8211; A heap-based buffer overflow was found in Corosync&#8217;s Totem Process Group (totempg) message"},"content":{"rendered":"<p>A heap-based buffer overflow was found in Corosync&#8217;s Totem Process Group (totempg) message reassembly. When processing fragmented multicast messages, the buffer used to reassemble fragments lacks a runtime bounds check in release builds. A network-adjacent attacker able to send crafted multicast protocol messages to the cluster could cause a heap buffer overflow with attacker-controlled data. This can crash the Corosync daemon, causing a denial of service to the entire cluster, and may potentially allow further exploitation given sufficient heap-corruption control.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A heap-based buffer overflow was found in Corosync&#8217;s Totem Process Group (totempg) message reassembly. When processing fragmented multicast messages, the buffer used to reassemble fragments lacks a ru<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-17076","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/17076","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=17076"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17076"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17076"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}