{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "81adee47dfb608df3ad0b91d230fb3cef75f0060"
            },
            {
              "fixed": "0975b64ffb34560042090a5986c3a02e6c80f36f"
            },
            {
              "fixed": "d04cc16d3624218a5458b2b664ae431f1b3b334d"
            },
            {
              "fixed": "7b735ef81286007794a227ce2539419479c02a5f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.33"
            },
            {
              "fixed": "6.18.24"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31692.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nrtnetlink: add missing netlink_ns_capable() check for peer netns\n\nrtnl_newlink() lacks a CAP_NET_ADMIN capability check on the peer\nnetwork namespace when creating paired devices (veth, vxcan,\nnetkit). This allows an unprivileged user with a user namespace\nto create interfaces in arbitrary network namespaces, including\ninit_net.\n\nAdd a netlink_ns_capable() check for CAP_NET_ADMIN in the peer\nnamespace before allowing device creation to proceed.",
  "id": "CVE-2026-31692",
  "modified": "2026-07-15T01:49:03.781162345Z",
  "published": "2026-04-30T10:34:51.589Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0975b64ffb34560042090a5986c3a02e6c80f36f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b735ef81286007794a227ce2539419479c02a5f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d04cc16d3624218a5458b2b664ae431f1b3b334d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31692.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31692"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "rtnetlink: add missing netlink_ns_capable() check for peer netns"
}