{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "046c052b475e7119b6a30e3483e2888fc606a2f8"
            },
            {
              "fixed": "c6eb2d615210b80339548ab07c0230edaab9a6c7"
            },
            {
              "fixed": "8ff78591d309c50a4fdab683b68dd8d512a270dd"
            },
            {
              "fixed": "3bf0e349cbb4f975f35eb22753acc346b89c66a0"
            },
            {
              "fixed": "37ff9794be48d0caa37687e04d09675f9c849121"
            },
            {
              "fixed": "ffb2bd7ade36ec4da32c46a6eddbf4515316d08c"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "6.6.151"
            }
          ],
          "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-2026-68161.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: close UDP tunnel sockets during netns teardown\n\nproc_sctp_do_udp_port() starts per-net SCTP UDP tunneling sockets when\nnet.sctp.udp_port is set, and stops/restarts them when the sysctl value\nchanges. The netns exit path does not stop these sockets, so a namespace\ncan be torn down while its SCTP UDP tunnel sockets are still installed.\n\nClose the UDP tunnel sockets from sctp_ctrlsock_exit() after unregistering\nthe per-net sysctl table. This prevents new sysctl writes from racing in\nwhile the sockets are being released, and closes the sockets before the\ncontrol socket is destroyed.",
  "id": "CVE-2026-68161",
  "modified": "2026-08-18T03:31:27.703564231Z",
  "published": "2026-08-10T11:59:28.072Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/37ff9794be48d0caa37687e04d09675f9c849121"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bf0e349cbb4f975f35eb22753acc346b89c66a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ff78591d309c50a4fdab683b68dd8d512a270dd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c6eb2d615210b80339548ab07c0230edaab9a6c7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ffb2bd7ade36ec4da32c46a6eddbf4515316d08c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68161.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68161"
    },
    {
      "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:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "sctp: close UDP tunnel sockets during netns teardown"
}