{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "dbef491ebe7f3a4fb1b9111878b86a426fd540b7"
            },
            {
              "fixed": "6a733a38b983d8c2e222f13968209010cf44de87"
            },
            {
              "fixed": "19d89b13a43640b2da2f277ee462d919d988cb6f"
            },
            {
              "fixed": "b3df61bb745eb5201eac22679a2839d4ccbf3442"
            },
            {
              "fixed": "1ae134c012e10384cdac420b5cc6e0615cde0b55"
            },
            {
              "fixed": "5161e67c561c4f28a5d9335a6e859b02511de92b"
            },
            {
              "fixed": "64d322c288577793eedd352b96ef75234ed380fe"
            },
            {
              "fixed": "588d4a6795d99d080f74ef0b5f391ea8c453ae5d"
            },
            {
              "fixed": "d0f86fb36eb260abd10007b62c9dcc1028e03e61"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.6.0"
            },
            {
              "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": "6.6.152"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.104"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.45"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74705.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nudp: fix potential use-after-free in tunnel segmentation\n\n__skb_udp_tunnel_segment() gets the UDP header before ensuring the\ntunnel header is in the skb head. If the pull reallocates skb-\u003ehead,\nthe saved UDP header pointer is no longer valid.\n\nGet the UDP header after the pull to avoid a potential use-after-free.",
  "id": "CVE-2026-74705",
  "modified": "2026-08-27T11:30:55.761816065Z",
  "published": "2026-08-22T15:33:04.110Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19d89b13a43640b2da2f277ee462d919d988cb6f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1ae134c012e10384cdac420b5cc6e0615cde0b55"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5161e67c561c4f28a5d9335a6e859b02511de92b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/588d4a6795d99d080f74ef0b5f391ea8c453ae5d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64d322c288577793eedd352b96ef75234ed380fe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6a733a38b983d8c2e222f13968209010cf44de87"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b3df61bb745eb5201eac22679a2839d4ccbf3442"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0f86fb36eb260abd10007b62c9dcc1028e03e61"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74705.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74705"
    },
    {
      "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:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "udp: fix potential use-after-free in tunnel segmentation"
}