{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-101304",
        "assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
        "state": "PUBLISHED",
        "assignerShortName": "freebsd",
        "dateReserved": "2026-09-28T13:33:02.323Z",
        "datePublished": "2026-10-15T06:46:03.792Z",
        "dateUpdated": "2026-10-15T06:46:03.792Z"
    },
    "containers": {
        "cna": {
            "datePublic": "2026-09-29T20:30:00.000Z",
            "title": "Multiple jail filesystem root escapes",
            "references": [
                {
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:66.jail.asc"
                }
            ],
            "affected": [
                {
                    "defaultStatus": "unknown",
                    "modules": [
                        "jail"
                    ],
                    "product": "FreeBSD",
                    "vendor": "FreeBSD",
                    "versions": [
                        {
                            "status": "affected",
                            "versionType": "release",
                            "version": "15.1-RELEASE",
                            "lessThan": "p4"
                        },
                        {
                            "status": "affected",
                            "versionType": "release",
                            "version": "15.0-RELEASE",
                            "lessThan": "p14"
                        },
                        {
                            "status": "affected",
                            "versionType": "release",
                            "version": "14.5-RELEASE",
                            "lessThan": "p1"
                        },
                        {
                            "status": "affected",
                            "versionType": "release",
                            "version": "14.4-RELEASE",
                            "lessThan": "p10"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "finder",
                    "value": "Jan Bramkamp"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "When fdescfs(4) was mounted in a jail with the \"nodup\" option, opening /dev/fd/N returned a descriptor that did not inherit FD_RESOLVE_BENEATH or the Capsicum capability rights of descriptor N.\n\nA process in a jail that has received a directory file descriptor from another jail can use these techniques to escape the jail's filesystem root restriction."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-273",
                            "description": "CWE-273: Improper Check for Dropped Privileges",
                            "lang": "en",
                            "type": "CWE"
                        },
                        {
                            "cweId": "CWE-273",
                            "description": "CWE-278: Insecure Preserved Inherited Permissions",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
                "shortName": "freebsd",
                "dateUpdated": "2026-10-15T06:46:03.792Z"
            },
            "x_generator": {
                "engine": "cvelib 1.8.0"
            }
        }
    }
}