{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ae8840825605f36f98f247323edc150e761cb64e"
            },
            {
              "fixed": "6375093eb45cd7d89f1945f939eeae3b29d79f56"
            },
            {
              "fixed": "1b7f7b653e3557690047c62f03b80a24ea5a58a5"
            },
            {
              "fixed": "bf045341dfb3e767f0ff94cf240ce3c371973bd4"
            },
            {
              "fixed": "2355c8c26d2aa1b4385b369e67202e47d460d555"
            },
            {
              "fixed": "1511631b7cfc4152b10a0a9d04c7a0bf2ddf4585"
            },
            {
              "fixed": "1235e017aa11cf01e91b613c4c5ed6aa28934fff"
            },
            {
              "fixed": "c9dceac9e1c7c772c43c732fc0d325e72835801a"
            },
            {
              "fixed": "1395a676ec15a0a02a2a6d86602324f2d5fd41d5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.10.0"
            },
            {
              "fixed": "5.10.265"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.216"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.183"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.151"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.103"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.44"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80681.json"
  },
  "details": "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(), pskb_may_pull() can be called, which may\nreallocate skb-\u003ehead.\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-\u003eh_dest.\n\nFix this by updating eth = eth_hdr(skb) after calling route_shortcircuit().",
  "id": "CVE-2026-80681",
  "modified": "2026-08-31T03:30:48.419248395Z",
  "published": "2026-08-28T06:52:48.896Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1235e017aa11cf01e91b613c4c5ed6aa28934fff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1395a676ec15a0a02a2a6d86602324f2d5fd41d5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1511631b7cfc4152b10a0a9d04c7a0bf2ddf4585"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b7f7b653e3557690047c62f03b80a24ea5a58a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2355c8c26d2aa1b4385b369e67202e47d460d555"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6375093eb45cd7d89f1945f939eeae3b29d79f56"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf045341dfb3e767f0ff94cf240ce3c371973bd4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9dceac9e1c7c772c43c732fc0d325e72835801a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80681.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80681"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "vxlan: re-fetch eth header after route_shortcircuit()"
}