CVE-2025-71304

{"id": "CVE-2025-71304", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "e114e473771c848c3cfec05f0123e70f1cdbdc99", "lessThan": "eb718a3c8181ada679340db34cd61bce48e44749", "versionType": "git"}, {"status": "affected", "version": "e114e473771c848c3cfec05f0123e70f1cdbdc99", "lessThan": "6ec091c5c7eeabd249a7c46813cad1e9f555f859", "versionType": "git"}, {"status": "affected", "version": "e114e473771c848c3cfec05f0123e70f1cdbdc99", "lessThan": "199452f22d2f74b897fe826f81ec402b0a8461a0", "versionType": "git"}, {"status": "affected", "version": "e114e473771c848c3cfec05f0123e70f1cdbdc99", "lessThan": "1c7ee23dfcd18d80770d8f90f2ab5bb1b2bfd8a3", "versionType": "git"}, {"status": "affected", "version": "e114e473771c848c3cfec05f0123e70f1cdbdc99", "lessThan": "f8071500177f38cff38892bd85ac631cc6e010b2", "versionType": "git"}, {"status": "affected", "version": "e114e473771c848c3cfec05f0123e70f1cdbdc99", "lessThan": "5a247a84de0ba44edbbd6be851c8a6b2aa60ff85", "versionType": "git"}, {"status": "affected", "version": "e114e473771c848c3cfec05f0123e70f1cdbdc99", "lessThan": "8beebb8ad9a003f978e53b06237986588223e15e", "versionType": "git"}, {"status": "affected", "version": "e114e473771c848c3cfec05f0123e70f1cdbdc99", "lessThan": "33d589ed60ae433b483761987b85e0d24e54584e", "versionType": "git"}], "programFiles": ["security/smack/smackfs.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.25"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.25", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.252", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.202", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.165", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.128", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.75", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.14", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.4", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["security/smack/smackfs.c"], "defaultStatus": "affected"}]}], "published": "2026-05-27T14:16:42.850", "references": [{"url": "https://git.kernel.org/stable/c/199452f22d2f74b897fe826f81ec402b0a8461a0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/1c7ee23dfcd18d80770d8f90f2ab5bb1b2bfd8a3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/33d589ed60ae433b483761987b85e0d24e54584e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5a247a84de0ba44edbbd6be851c8a6b2aa60ff85", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6ec091c5c7eeabd249a7c46813cad1e9f555f859", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8beebb8ad9a003f978e53b06237986588223e15e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/eb718a3c8181ada679340db34cd61bce48e44749", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f8071500177f38cff38892bd85ac631cc6e010b2", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "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/$$/attr/smack/current\n # ping -c1 10.1.95.12\n 64 bytes from 10.1.95.12: icmp_seq=1 ttl=64 time=0.617 ms\n\nThis happens because Smack keeps decommissioned DOIs,\nfails to re-add them, and consequently refuses to add\nthe \u201cdefault\u201d domain map:\n\n # netlabelctl -p cipso list\n Configured CIPSO mappings (2)\n DOI value : 3\n mapping type : PASS_THROUGH\n DOI value : 4\n mapping type : PASS_THROUGH\n # netlabelctl -p map list\n Configured NetLabel domain mappings (2)\n domain: \"_\" (IPv4)\n protocol: UNLABELED\n!> (no ipv4 map for default domain here)\n domain: DEFAULT (IPv6)\n protocol: UNLABELED\n\nFix by clearing decommissioned DOI definitions and\nserializing concurrent DOI updates with a new lock.\n\nAlso:\n- allow /smack/doi to live unconfigured, since\n adding a map (netlbl_cfg_cipsov4_map_add) may fail.\n CIPSO_V4_DOI_UNKNOWN(0) indicates the unconfigured DOI\n- add new DOI before removing the old default map,\n so the old map remains if the add fails\n\n(2008-02-04, Casey Schaufler)"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nsmack: /smack/doi: aceptar valores usados previamente\n\nEscribir en /smack/doi un valor que haya sido escrito all\u00ed en el pasado deshabilita la red para etiquetas no ambientales.\nPor ejemplo:\n\n # cat /smack/doi\n 3\n # netlabelctl -p cipso list\n Configured CIPSO mappings (1)\n DOI value : 3\n mapping type : PASS_THROUGH\n # netlabelctl -p map list\n Configured NetLabel domain mappings (3)\n domain: \u201c_\u201d (IPv4)\n protocol: UNLABELED\n domain: DEFAULT (IPv4)\n protocol: CIPSO, DOI = 3\n domain: DEFAULT (IPv6)\n protocol: UNLABELED\n\n # cat /smack/ambient\n _\n # cat /proc/$$/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\nEsto ocurre porque Smack mantiene los DOIs desmantelados, no logra volver a a\u00f1adirlos y, en consecuencia, se niega a a\u00f1adir el mapa de dominio 'default':\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: \u201c_\u201d (IPv4)\n protocol: UNLABELED\n!> (no hay mapa ipv4 para el dominio default aqu\u00ed)\n domain: DEFAULT (IPv6)\n protocol: UNLABELED\n\nSoluci\u00f3n al borrar las definiciones de DOI desmanteladas y serializar las actualizaciones concurrentes de DOI con un nuevo bloqueo.\n\nAdem\u00e1s:\n- permitir que /smack/doi permanezca sin configurar, ya que a\u00f1adir un mapa (netlbl_cfg_cipsov4_map_add) puede fallar. CIPSO_V4_DOI_UNKNOWN(0) indica el DOI no configurado\n- a\u00f1adir el nuevo DOI antes de eliminar el mapa 'default' antiguo, para que el mapa antiguo permanezca si la adici\u00f3n falla\n\n(2008-02-04, Casey Schaufler)"}], "lastModified": "2026-10-14T13:10:00.187", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C84A76EC-E20E-48DD-966B-1ABC479AC45D", "versionEndExcluding": "5.10.252", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4002FC2B-1456-4666-B240-0EBF590C4671", "versionEndExcluding": "5.15.202", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "797C7F46-D0BE-4FB8-A502-C5EF8E6B6654", "versionEndExcluding": "6.1.165", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "851E9353-6C09-4CC9-877E-E09DB164A3C2", "versionEndExcluding": "6.6.128", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BCE16369-98ED-41CF-8995-DFDC10B288D2", "versionEndExcluding": "6.12.75", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BF463CB7-1F58-4607-B847-77ED23E4B9B7", "versionEndExcluding": "6.18.14", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "672A3E79-EC03-479D-8503-361DFBDC8092", "versionEndExcluding": "6.19.4", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}