{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "5b861f6baa3a22a48d7a4ad0ce38a223d36c978a"
            },
            {
              "fixed": "a5522963c57f12df5f9db804ebfc472b58eef0ae"
            },
            {
              "fixed": "278c6a31ee27c931c722202c8c06cc3253923254"
            },
            {
              "fixed": "11a7d989d00160481a273eb4f7f05f64b5a6ffdf"
            },
            {
              "fixed": "2abdacc927c92fa6a9cc8341e8c9b88dcb561553"
            },
            {
              "fixed": "9de5518fc1fab583526a8f66b8e505c4864dc60a"
            },
            {
              "fixed": "f8c498585d2a08aa623748353c3e61467b7e9fd2"
            },
            {
              "fixed": "95f45e20f1b2cec13823f0f68060ab4b2261b2c1"
            },
            {
              "fixed": "8efb8f8bbb353b8f2fdf4f37534c6d96c9f69e01"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.14.0"
            },
            {
              "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": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68142.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngeneve: require CAP_NET_ADMIN in the device netns for changelink\n\nA tunnel changelink() operates on at most two netns, dev_net(dev) and\nthe sticky underlay netns geneve-\u003enet. They differ once the device is\ncreated in or moved to a netns other than the one the request runs in.\nThe rtnl changelink path checks CAP_NET_ADMIN only against dev_net(dev),\nso a caller privileged there but not in geneve-\u003enet can rewrite a geneve\ndevice whose underlay lives in geneve-\u003enet.\n\ngeneve_changelink() applies the new configuration against geneve-\u003enet:\ngeneve_link_config() and the geneve_quiesce()/geneve_unquiesce() pair\nreopen the underlay sockets in that netns (geneve_sock_add() uses\ngeneve-\u003enet), so the same reasoning as the tunnel changelink series\napplies here.\n\nGate geneve_changelink() with rtnl_dev_link_net_capable(), at the top of\nthe op before any attribute is parsed, matching ipgre_changelink() and\nthe rest of the \"require CAP_NET_ADMIN in the device netns for\nchangelink\" series.\n\nFound by 0sec automated security-research tooling (https://0sec.ai).",
  "id": "CVE-2026-68142",
  "modified": "2026-08-21T03:30:37.574916413Z",
  "published": "2026-08-10T11:59:06.048Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/11a7d989d00160481a273eb4f7f05f64b5a6ffdf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/278c6a31ee27c931c722202c8c06cc3253923254"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2abdacc927c92fa6a9cc8341e8c9b88dcb561553"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8efb8f8bbb353b8f2fdf4f37534c6d96c9f69e01"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/95f45e20f1b2cec13823f0f68060ab4b2261b2c1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9de5518fc1fab583526a8f66b8e505c4864dc60a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a5522963c57f12df5f9db804ebfc472b58eef0ae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f8c498585d2a08aa623748353c3e61467b7e9fd2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68142.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68142"
    },
    {
      "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": "geneve: require CAP_NET_ADMIN in the device netns for changelink"
}