{"id":14996,"date":"2026-09-04T19:02:21","date_gmt":"2026-09-04T11:02:21","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-63992"},"modified":"2026-09-04T19:02:21","modified_gmt":"2026-09-04T11:02:21","slug":"cve-2026-63992","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-63992","title":{"rendered":"CVE-2026-63992 [CRITICAL] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\ntunnels: do not assum"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>tunnels: do not assume transport header in iptunnel_pmtud_check_icmp()<\/p>\n<p>In some cases, iptunnel_pmtud_check_icmp() can be called while<br \/>\nskb transport header is not set.<\/p>\n<p>This triggers an out-of-bound access, because<br \/>\n(typeof(skb-&gt;transport_header))~0U is 65535.<\/p>\n<p>Access the icmp header based on IPv4 network header,<br \/>\nafter making sure icmp-&gt;type is present in skb linear part.<\/p>\n<p>Note that iptunnel_pmtud_check_icmpv6()) is fine.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>tunnels: do not assume transport header in iptunnel_pmtud_check_icmp()<\/p>\n<p>In some cases, iptunnel_pmtud_check_icmp() can be called wh<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-14996","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/14996","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=14996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}