{"api_version":"1","generated_at":"2026-06-03T09:52:22+00:00","cve":"CVE-2025-71304","urls":{"html":"https://cve.report/CVE-2025-71304","api":"https://cve.report/api/cve/CVE-2025-71304.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2025-71304","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-71304"},"summary":{"title":"smack: /smack/doi: accept previously used values","description":"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/$$/attr/smack/current\n    _\n    # ping -c1 10.1.95.12\n    64 bytes from 10.1.95.12: icmp_seq=1 ttl=64 time=0.964 ms\n    # echo foo >/proc/$$/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 >/smack/doi\n    # echo 3 >/smack/doi\n!>  [  214.050395] smk_cipso_doi:691 cipso add rc = -17\n    # echo 3 >/smack/doi\n!>  [  249.402261] smk_cipso_doi:678 remove rc = -2\n!>  [  249.402261] smk_cipso_doi:691 cipso add rc = -17\n\n    # ping -c1 10.1.95.12\n!!> ping: 10.1.95.12: Address family for hostname not supported\n\n    # echo _ >/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!>  (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)","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 14:16:42","updated_at":"2026-05-27 14:48:31"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/f8071500177f38cff38892bd85ac631cc6e010b2","name":"https://git.kernel.org/stable/c/f8071500177f38cff38892bd85ac631cc6e010b2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/eb718a3c8181ada679340db34cd61bce48e44749","name":"https://git.kernel.org/stable/c/eb718a3c8181ada679340db34cd61bce48e44749","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/199452f22d2f74b897fe826f81ec402b0a8461a0","name":"https://git.kernel.org/stable/c/199452f22d2f74b897fe826f81ec402b0a8461a0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6ec091c5c7eeabd249a7c46813cad1e9f555f859","name":"https://git.kernel.org/stable/c/6ec091c5c7eeabd249a7c46813cad1e9f555f859","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5a247a84de0ba44edbbd6be851c8a6b2aa60ff85","name":"https://git.kernel.org/stable/c/5a247a84de0ba44edbbd6be851c8a6b2aa60ff85","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/33d589ed60ae433b483761987b85e0d24e54584e","name":"https://git.kernel.org/stable/c/33d589ed60ae433b483761987b85e0d24e54584e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1c7ee23dfcd18d80770d8f90f2ab5bb1b2bfd8a3","name":"https://git.kernel.org/stable/c/1c7ee23dfcd18d80770d8f90f2ab5bb1b2bfd8a3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8beebb8ad9a003f978e53b06237986588223e15e","name":"https://git.kernel.org/stable/c/8beebb8ad9a003f978e53b06237986588223e15e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-71304","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-71304","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e114e473771c848c3cfec05f0123e70f1cdbdc99 eb718a3c8181ada679340db34cd61bce48e44749 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e114e473771c848c3cfec05f0123e70f1cdbdc99 6ec091c5c7eeabd249a7c46813cad1e9f555f859 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e114e473771c848c3cfec05f0123e70f1cdbdc99 199452f22d2f74b897fe826f81ec402b0a8461a0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e114e473771c848c3cfec05f0123e70f1cdbdc99 1c7ee23dfcd18d80770d8f90f2ab5bb1b2bfd8a3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e114e473771c848c3cfec05f0123e70f1cdbdc99 f8071500177f38cff38892bd85ac631cc6e010b2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e114e473771c848c3cfec05f0123e70f1cdbdc99 5a247a84de0ba44edbbd6be851c8a6b2aa60ff85 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e114e473771c848c3cfec05f0123e70f1cdbdc99 8beebb8ad9a003f978e53b06237986588223e15e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e114e473771c848c3cfec05f0123e70f1cdbdc99 33d589ed60ae433b483761987b85e0d24e54584e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.25","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.25 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.252 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.202 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.165 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.128 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.75 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.14 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.4 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2025","cve_id":"71304","cve":"CVE-2025-71304","epss":"0.000240000","percentile":"0.073320000","score_date":"2026-06-01","updated_at":"2026-06-02 00:05:21"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["security/smack/smackfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"eb718a3c8181ada679340db34cd61bce48e44749","status":"affected","version":"e114e473771c848c3cfec05f0123e70f1cdbdc99","versionType":"git"},{"lessThan":"6ec091c5c7eeabd249a7c46813cad1e9f555f859","status":"affected","version":"e114e473771c848c3cfec05f0123e70f1cdbdc99","versionType":"git"},{"lessThan":"199452f22d2f74b897fe826f81ec402b0a8461a0","status":"affected","version":"e114e473771c848c3cfec05f0123e70f1cdbdc99","versionType":"git"},{"lessThan":"1c7ee23dfcd18d80770d8f90f2ab5bb1b2bfd8a3","status":"affected","version":"e114e473771c848c3cfec05f0123e70f1cdbdc99","versionType":"git"},{"lessThan":"f8071500177f38cff38892bd85ac631cc6e010b2","status":"affected","version":"e114e473771c848c3cfec05f0123e70f1cdbdc99","versionType":"git"},{"lessThan":"5a247a84de0ba44edbbd6be851c8a6b2aa60ff85","status":"affected","version":"e114e473771c848c3cfec05f0123e70f1cdbdc99","versionType":"git"},{"lessThan":"8beebb8ad9a003f978e53b06237986588223e15e","status":"affected","version":"e114e473771c848c3cfec05f0123e70f1cdbdc99","versionType":"git"},{"lessThan":"33d589ed60ae433b483761987b85e0d24e54584e","status":"affected","version":"e114e473771c848c3cfec05f0123e70f1cdbdc99","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["security/smack/smackfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.25"},{"lessThan":"2.6.25","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.252","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.202","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.165","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.128","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.75","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.14","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.252","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.202","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.165","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.128","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.75","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.14","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.4","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"2.6.25","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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 >/proc/$$/attr/smack/current\n    # ping -c1 10.1.95.12\n    64 bytes from 10.1.95.12: icmp_seq=1 ttl=64 time=0.956 ms\n    unknown option 86\n\n    # echo 4 >/smack/doi\n    # echo 3 >/smack/doi\n!>  [  214.050395] smk_cipso_doi:691 cipso add rc = -17\n    # echo 3 >/smack/doi\n!>  [  249.402261] smk_cipso_doi:678 remove rc = -2\n!>  [  249.402261] smk_cipso_doi:691 cipso add rc = -17\n\n    # ping -c1 10.1.95.12\n!!> ping: 10.1.95.12: Address family for hostname not supported\n\n    # echo _ >/proc/$$/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!>  (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)"}],"providerMetadata":{"dateUpdated":"2026-05-27T12:14:53.289Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/eb718a3c8181ada679340db34cd61bce48e44749"},{"url":"https://git.kernel.org/stable/c/6ec091c5c7eeabd249a7c46813cad1e9f555f859"},{"url":"https://git.kernel.org/stable/c/199452f22d2f74b897fe826f81ec402b0a8461a0"},{"url":"https://git.kernel.org/stable/c/1c7ee23dfcd18d80770d8f90f2ab5bb1b2bfd8a3"},{"url":"https://git.kernel.org/stable/c/f8071500177f38cff38892bd85ac631cc6e010b2"},{"url":"https://git.kernel.org/stable/c/5a247a84de0ba44edbbd6be851c8a6b2aa60ff85"},{"url":"https://git.kernel.org/stable/c/8beebb8ad9a003f978e53b06237986588223e15e"},{"url":"https://git.kernel.org/stable/c/33d589ed60ae433b483761987b85e0d24e54584e"}],"title":"smack: /smack/doi: accept previously used values","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2025-71304","datePublished":"2026-05-27T12:14:53.289Z","dateReserved":"2026-05-08T13:14:33.087Z","dateUpdated":"2026-05-27T12:14:53.289Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:16:42","lastModifiedDate":"2026-05-27 14:48:31","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2025","CveId":"71304","Ordinal":"1","Title":"smack: /smack/doi: accept previously used values","CVE":"CVE-2025-71304","Year":"2025"},"notes":[{"CveYear":"2025","CveId":"71304","Ordinal":"1","NoteData":"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/$$/attr/smack/current\n    _\n    # ping -c1 10.1.95.12\n    64 bytes from 10.1.95.12: icmp_seq=1 ttl=64 time=0.964 ms\n    # echo foo >/proc/$$/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 >/smack/doi\n    # echo 3 >/smack/doi\n!>  [  214.050395] smk_cipso_doi:691 cipso add rc = -17\n    # echo 3 >/smack/doi\n!>  [  249.402261] smk_cipso_doi:678 remove rc = -2\n!>  [  249.402261] smk_cipso_doi:691 cipso add rc = -17\n\n    # ping -c1 10.1.95.12\n!!> ping: 10.1.95.12: Address family for hostname not supported\n\n    # echo _ >/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!>  (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)","Type":"Description","Title":"smack: /smack/doi: accept previously used values"}]}}}