{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-15576", "assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109", "state": "PUBLISHED", "assignerShortName": "freebsd", "dateReserved": "2026-02-09T17:48:45.726Z", "datePublished": "2026-03-09T11:54:20.630Z", "dateUpdated": "2026-03-10T18:56:48.250Z"}, "containers": {"cna": {"datePublic": "2026-02-24T17:00:00.000Z", "title": "Jail chroot escape via fd exchange with a different jail", "references": [{"tags": ["vendor-advisory"], "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:04.jail.asc"}], "affected": [{"defaultStatus": "unknown", "modules": ["jail"], "product": "FreeBSD", "vendor": "FreeBSD", "versions": [{"lessThan": "p9", "status": "affected", "version": "14.3-RELEASE", "versionType": "release"}, {"lessThan": "p10", "status": "affected", "version": "13.5-RELEASE", "versionType": "release"}]}], "descriptions": [{"lang": "en", "value": "If two sibling jails are restricted to separate filesystem trees, which is to say that neither of the two jail root directories is an ancestor of the other, jailed processes may nonetheless be able to access a shared directory via a nullfs mount, if the administrator has configured one.\n\nIn this case, cooperating processes in the two jails may establish a connection using a unix domain socket and exchange directory descriptors with each other.\n\nWhen performing a filesystem name lookup, at each step of the lookup, the kernel checks whether the lookup would descend below the jail root of the current process. If the jail root directory is not encountered, the lookup continues.\n\nIn a configuration where processes in two different jails are able to exchange file descriptors using a unix domain socket, it is possible for a jailed process to receive a directory for a descriptor that is below that process' jail root. This enables full filesystem access for a jailed process, breaking the chroot.\n\nNote that the system administrator is still responsible for ensuring that an unprivileged user on the jail host is not able to pass directory descriptors to a jailed process, even in a patched kernel."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-269", "description": "CWE-269 Improper Privilege Management", "lang": "en", "type": "CWE"}, {"cweId": "CWE-488", "description": "CWE-488: Exposure of Data Element to Wrong Session", "lang": "en", "type": "CWE"}, {"cweId": "CWE-790", "description": "CWE-790: Improper Filtering of Special Elements", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "63664ac6-956c-4cba-a5d0-f46076e16109", "shortName": "freebsd", "dateUpdated": "2026-03-09T11:54:20.630Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-03-10T18:56:28.342905Z", "id": "CVE-2025-15576", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-10T18:56:48.250Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "If two sibling jails are restricted to separate filesystem trees, which is to say that neither of the two jail root directories is an ancestor of the other, jailed processes may nonetheless be able to access a shared directory via a nullfs mount, if the administrator has configured one.\n\nIn this case, cooperating processes in the two jails may establish a connection using a unix domain socket and exchange directory descriptors with each other.\n\nWhen performing a filesystem name lookup, at each step of the lookup, the kernel checks whether the lookup would descend below the jail root of the current process. If the jail root directory is not encountered, the lookup continues.\n\nIn a configuration where processes in two different jails are able to exchange file descriptors using a unix domain socket, it is possible for a jailed process to receive a directory for a descriptor that is below that process' jail root. This enables full filesystem access for a jailed process, breaking the chroot.\n\nNote that the system administrator is still responsible for ensuring that an unprivileged user on the jail host is not able to pass directory descriptors to a jailed process, even in a patched kernel."}, {"lang": "es", "value": "Si dos jails hermanos est\u00e1n restringidos a \u00e1rboles de sistema de archivos separados, es decir, que ninguno de los dos directorios ra\u00edz de jail es un ancestro del otro, los procesos enjaulados pueden, no obstante, acceder a un directorio compartido a trav\u00e9s de un montaje nullfs, si el administrador ha configurado uno.\n\nEn este caso, los procesos cooperantes en los dos jails pueden establecer una conexi\u00f3n usando un socket de dominio unix e intercambiar descriptores de directorio entre s\u00ed.\n\nAl realizar una b\u00fasqueda de nombre de sistema de archivos, en cada paso de la b\u00fasqueda, el kernel verifica si la b\u00fasqueda descender\u00eda por debajo de la ra\u00edz del jail del proceso actual. Si no se encuentra el directorio ra\u00edz del jail, la b\u00fasqueda contin\u00faa.\n\nEn una configuraci\u00f3n donde los procesos en dos jails diferentes pueden intercambiar descriptores de archivo usando un socket de dominio unix, es posible que un proceso enjaulado reciba un directorio para un descriptor que est\u00e1 por debajo de la ra\u00edz del jail de ese proceso. Esto permite el acceso completo al sistema de archivos para un proceso enjaulado, rompiendo el chroot.\n\nTenga en cuenta que el administrador del sistema sigue siendo responsable de asegurar que un usuario sin privilegios en el host del jail no pueda pasar descriptores de directorio a un proceso enjaulado, incluso en un kernel parcheado."}], "id": "CVE-2025-15576", "lastModified": "2026-03-10T20:16:19.660", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.1, "impactScore": 5.8, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-03-09T12:16:11.523", "references": [{"source": "secteam@freebsd.org", "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:04.jail.asc"}], "sourceIdentifier": "secteam@freebsd.org", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-269"}, {"lang": "en", "value": "CWE-488"}, {"lang": "en", "value": "CWE-790"}], "source": "secteam@freebsd.org", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[14.3-RELEASE,p9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[13.5-RELEASE,p10)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "FreeBSD", "source": "cna", "vendor": "FreeBSD"}, "product": "freebsd", "vendor": "freebsd"}], "created": "2026-03-10T14:07:27.771164+00:00", "updated": "2026-03-10T14:07:27.771271+00:00", "vendors": ["freebsd", "freebsd$PRODUCT$freebsd"]}