{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "61220ab349485d911083d0b7990ccd3db6c63297"
            },
            {
              "fixed": "f5254e7766b4ac02b66b2ccef896cd278503cb11"
            },
            {
              "fixed": "ef897249dc957089e6f7f11ceea699e093ad51bd"
            },
            {
              "fixed": "f6e8b52a2cb3bbd72ddc2d44e474b907b9dcf5ba"
            },
            {
              "fixed": "c64b9ae7eb97e81d54b792910a3aeafd92566c79"
            },
            {
              "fixed": "b2b61c540571b3cc2f461e2a579ba2cc8c2a52cf"
            },
            {
              "fixed": "0b2f9c908f930ec4be17d389723f9a202d6a883c"
            },
            {
              "fixed": "f97e93ebf2f9b8ef3b87f7a9371255e84d151587"
            },
            {
              "fixed": "e2ac3b242c37dff323a964962e43854f4b1a2b79"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.15.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72055.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ip6_vti: require CAP_NET_ADMIN in the device netns for changelink\n\nvti6_changelink() operates on at most two netns, dev_net(dev) and the\ntunnel link netns t-\u003enet. They differ once the device is created in or\nmoved to a netns other than the one the request runs in. The rtnl\nchangelink path checks CAP_NET_ADMIN only against dev_net(dev), so a\ncaller privileged there but not in t-\u003enet can rewrite a tunnel that\nlives in t-\u003enet.\n\nGate vti6_changelink() on rtnl_dev_link_net_capable() at its top,\nbefore any attribute is parsed.",
  "id": "CVE-2026-72055",
  "modified": "2026-08-18T03:31:19.976294623Z",
  "published": "2026-08-15T05:52:11.413Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b2f9c908f930ec4be17d389723f9a202d6a883c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b2b61c540571b3cc2f461e2a579ba2cc8c2a52cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c64b9ae7eb97e81d54b792910a3aeafd92566c79"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e2ac3b242c37dff323a964962e43854f4b1a2b79"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef897249dc957089e6f7f11ceea699e093ad51bd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f5254e7766b4ac02b66b2ccef896cd278503cb11"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f6e8b52a2cb3bbd72ddc2d44e474b907b9dcf5ba"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f97e93ebf2f9b8ef3b87f7a9371255e84d151587"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72055.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72055"
    },
    {
      "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:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net: ip6_vti: require CAP_NET_ADMIN in the device netns for changelink"
}