{"id":"CVE-2026-80681","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: re-fetch eth header after route_shortcircuit()\n\nBefore route_shortcircuit(), the eth header pointer is cached from eth_hdr(skb).\n\nInside route_shortcircuit(), ps…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: re-fetch eth header after route_shortcircuit()\n\nBefore route_shortcircuit(), the eth header pointer is cached from eth_hdr(skb).\n\nInside route_shortcircuit(), ps…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","published":"2026-08-28","updated":"2026-08-29","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80681","references":[{"url":"https://git.kernel.org/stable/c/1235e017aa11cf01e91b613c4c5ed6aa28934fff","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1395a676ec15a0a02a2a6d86602324f2d5fd41d5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1511631b7cfc4152b10a0a9d04c7a0bf2ddf4585","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1b7f7b653e3557690047c62f03b80a24ea5a58a5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2355c8c26d2aa1b4385b369e67202e47d460d555","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6375093eb45cd7d89f1945f939eeae3b29d79f56","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bf045341dfb3e767f0ff94cf240ce3c371973bd4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c9dceac9e1c7c772c43c732fc0d325e72835801a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00506,"epssPercentile":0.42245,"ingestedAt":"2026-08-30T04:47:10.414Z","slug":"CVE-2026-80681","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: re-fetch eth header after route_shortcircuit()\n\nBefore route_shortcircuit(), the eth header pointer is cached from eth_hdr(skb).\n\nInside route_shortcircuit(), pskb_may_pull() can be called, which may\nreallocate skb->head.\n\nIn this case, returning to vxlan_xmit() leaves the cached eth pointer pointing to\nfreed memory, leading to a use-after-free when dereferencing eth->h_dest.\n\nFix this by updating eth = eth_hdr(skb) after calling route_shortcircuit().\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}