{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e114e473771c848c3cfec05f0123e70f1cdbdc99"
            },
            {
              "fixed": "eb718a3c8181ada679340db34cd61bce48e44749"
            },
            {
              "fixed": "6ec091c5c7eeabd249a7c46813cad1e9f555f859"
            },
            {
              "fixed": "199452f22d2f74b897fe826f81ec402b0a8461a0"
            },
            {
              "fixed": "1c7ee23dfcd18d80770d8f90f2ab5bb1b2bfd8a3"
            },
            {
              "fixed": "f8071500177f38cff38892bd85ac631cc6e010b2"
            },
            {
              "fixed": "5a247a84de0ba44edbbd6be851c8a6b2aa60ff85"
            },
            {
              "fixed": "8beebb8ad9a003f978e53b06237986588223e15e"
            },
            {
              "fixed": "33d589ed60ae433b483761987b85e0d24e54584e"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.25"
            },
            {
              "fixed": "5.10.252"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.202"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.165"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.128"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.75"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.14"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71304.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmack: /smack/doi: accept previously used values\n\nWriting to /smack/doi a value that has ever been\nwritten there in the past disables networking for\nnon-ambient labels.\nE.g.\n\n    # cat /smack/doi\n    3\n    # netlabelctl -p cipso list\n    Configured CIPSO mappings (1)\n     DOI value : 3\n       mapping type : PASS_THROUGH\n    # netlabelctl -p map list\n    Configured NetLabel domain mappings (3)\n     domain: \"_\" (IPv4)\n       protocol: UNLABELED\n     domain: DEFAULT (IPv4)\n       protocol: CIPSO, DOI = 3\n     domain: DEFAULT (IPv6)\n       protocol: UNLABELED\n\n    # cat /smack/ambient\n    _\n    # cat /proc/$$/attr/smack/current\n    _\n    # ping -c1 10.1.95.12\n    64 bytes from 10.1.95.12: icmp_seq=1 ttl=64 time=0.964 ms\n    # echo foo \u003e/proc/$$/attr/smack/current\n    # ping -c1 10.1.95.12\n    64 bytes from 10.1.95.12: icmp_seq=1 ttl=64 time=0.956 ms\n    unknown option 86\n\n    # echo 4 \u003e/smack/doi\n    # echo 3 \u003e/smack/doi\n!\u003e  [  214.050395] smk_cipso_doi:691 cipso add rc = -17\n    # echo 3 \u003e/smack/doi\n!\u003e  [  249.402261] smk_cipso_doi:678 remove rc = -2\n!\u003e  [  249.402261] smk_cipso_doi:691 cipso add rc = -17\n\n    # ping -c1 10.1.95.12\n!!\u003e ping: 10.1.95.12: Address family for hostname not supported\n\n    # echo _ \u003e/proc/$$/attr/smack/current\n    # ping -c1 10.1.95.12\n    64 bytes from 10.1.95.12: icmp_seq=1 ttl=64 time=0.617 ms\n\nThis happens because Smack keeps decommissioned DOIs,\nfails to re-add them, and consequently refuses to add\nthe “default” domain map:\n\n    # netlabelctl -p cipso list\n    Configured CIPSO mappings (2)\n     DOI value : 3\n       mapping type : PASS_THROUGH\n     DOI value : 4\n       mapping type : PASS_THROUGH\n    # netlabelctl -p map list\n    Configured NetLabel domain mappings (2)\n     domain: \"_\" (IPv4)\n       protocol: UNLABELED\n!\u003e  (no ipv4 map for default domain here)\n     domain: DEFAULT (IPv6)\n       protocol: UNLABELED\n\nFix by clearing decommissioned DOI definitions and\nserializing concurrent DOI updates with a new lock.\n\nAlso:\n- allow /smack/doi to live unconfigured, since\n  adding a map (netlbl_cfg_cipsov4_map_add) may fail.\n  CIPSO_V4_DOI_UNKNOWN(0) indicates the unconfigured DOI\n- add new DOI before removing the old default map,\n  so the old map remains if the add fails\n\n(2008-02-04, Casey Schaufler)",
  "id": "CVE-2025-71304",
  "modified": "2026-07-08T05:39:18.374999615Z",
  "published": "2026-05-27T12:14:53.289Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/199452f22d2f74b897fe826f81ec402b0a8461a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c7ee23dfcd18d80770d8f90f2ab5bb1b2bfd8a3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33d589ed60ae433b483761987b85e0d24e54584e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5a247a84de0ba44edbbd6be851c8a6b2aa60ff85"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ec091c5c7eeabd249a7c46813cad1e9f555f859"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8beebb8ad9a003f978e53b06237986588223e15e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eb718a3c8181ada679340db34cd61bce48e44749"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f8071500177f38cff38892bd85ac631cc6e010b2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71304.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-71304"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "smack: /smack/doi: accept previously used values"
}