{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e4f67addf158f98f8197e08974966b18480dc751"
            },
            {
              "fixed": "42887be7c4cf283cce02cd0fb6411221167c8b6c"
            },
            {
              "fixed": "aa0d31376d574ac858a40078431a77127bf04ee4"
            },
            {
              "fixed": "ee799977d7941dbfb11049e17edd9eaf4f8820f7"
            },
            {
              "fixed": "4f3f96e771a20263635bb5e1307c112d613b4bbd"
            },
            {
              "fixed": "26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.8.0"
            },
            {
              "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/2026/74xxx/CVE-2026-74473.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: use pskb_network_may_pull() in route_shortcircuit()\n\nroute_shortcircuit() currently calls pskb_may_pull(skb, sizeof(struct iphdr))\n(or ipv6hdr), which checks if bytes are available starting from skb-\u003edata.\n\nHowever, in vxlan_xmit(), skb-\u003edata points to the MAC header, so\nskb_network_offset(skb) is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, 20)\nonly checks 20 bytes from skb-\u003edata (which is 14 bytes MAC header + 6 bytes of\nIP header), leaving the rest of the IP header potentially un-pulled in non-linear\nfrags. Subsequent dereferences of ip_hdr(skb)-\u003edaddr can read beyond the pulled\nlinear buffer length.\n\nFix this by using pskb_network_may_pull(), which adds skb_network_offset(skb) to\nthe length check to ensure the full network header is present in the linear buffer.",
  "id": "CVE-2026-74473",
  "modified": "2026-08-17T03:36:20.007174134Z",
  "published": "2026-08-15T12:27:09.382Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/42887be7c4cf283cce02cd0fb6411221167c8b6c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f3f96e771a20263635bb5e1307c112d613b4bbd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aa0d31376d574ac858a40078431a77127bf04ee4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee799977d7941dbfb11049e17edd9eaf4f8820f7"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74473.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74473"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "vxlan: use pskb_network_may_pull() in route_shortcircuit()"
}