{"id":12338,"date":"2026-09-04T18:54:17","date_gmt":"2026-09-04T10:54:17","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80681"},"modified":"2026-09-04T18:54:17","modified_gmt":"2026-09-04T10:54:17","slug":"cve-2026-80681","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80681","title":{"rendered":"CVE-2026-80681 [CRITICAL] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: re-fetch eth h"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>vxlan: re-fetch eth header after route_shortcircuit()<\/p>\n<p>Before route_shortcircuit(), the eth header pointer is cached from eth_hdr(skb).<\/p>\n<p>Inside route_shortcircuit(), pskb_may_pull() can be called, which may<br \/>\nreallocate skb-&gt;head.<\/p>\n<p>In this case, returning to vxlan_xmit() leaves the cached eth pointer pointing to<br \/>\nfreed memory, leading to a use-after-free when dereferencing eth-&gt;h_dest.<\/p>\n<p>Fix this by updating eth = eth_hdr(skb) after calling route_shortcircuit().<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>vxlan: re-fetch eth header after route_shortcircuit()<\/p>\n<p>Before route_shortcircuit(), the eth header pointer is cached from eth_hdr(s<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-12338","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/12338","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=12338"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12338"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}