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DISPUTED ** kernel/ptrace.c in the Linux kernel through 4.4.1 mishandles uid and gid mappings, which allows local users to gain privileges by establishing a user namespace, waiting for a root process to enter that namespace with an unsafe uid or gid, and then using the ptrace system call.  NOTE: the vendor states \"there is no kernel bug here.\""}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"SUSE-SU-2016:1038","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00031.html"},{"name":"SUSE-SU-2016:1033","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00027.html"},{"name":"SUSE-SU-2016:1034","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00028.html"},{"name":"[linux-kernel] 20151226 [PATCH] ptrace: being capable wrt a process requires mapped uids/gids","refsource":"MLIST","url":"https://lkml.org/lkml/2015/12/25/71"},{"name":"SUSE-SU-2016:1035","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00029.html"},{"name":"[linux-kernel] 20160106 Re: [PATCH] ptrace: being capable wrt a process requires mapped uids/gids","refsource":"MLIST","url":"http://marc.info/?l=linux-kernel&m=145204641422813&w=2"},{"name":"SUSE-SU-2016:1764","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html"},{"name":"SUSE-SU-2016:1031","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00025.html"},{"name":"SUSE-SU-2016:1019","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.html"},{"name":"[oss-security] 20151231 Re: CVE Request: Linux kernel: privilege escalation in user namespaces","refsource":"MLIST","url":"http://www.openwall.com/lists/oss-security/2015/12/31/5"},{"name":"[oss-security] 20151217 CVE Request: Linux kernel: privilege escalation in user namespaces","refsource":"MLIST","url":"http://www.openwall.com/lists/oss-security/2015/12/17/12"},{"name":"SUSE-SU-2016:1037","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00030.html"},{"name":"SUSE-SU-2016:1045","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00036.html"},{"name":"[linux-kernel] 20160106 Re: [PATCH] ptrace: being capable wrt a process requires mapped uids/gids","refsource":"MLIST","url":"http://marc.info/?l=linux-kernel&m=145204362722256&w=2"},{"name":"FEDORA-2016-5d43766e33","refsource":"FEDORA","url":"http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html"},{"name":"SUSE-SU-2016:1032","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00026.html"},{"name":"SUSE-SU-2016:1039","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00032.html"},{"name":"SUSE-SU-2016:1041","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00034.html"},{"name":"SUSE-SU-2016:1046","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00037.html"},{"name":"79899","refsource":"BID","url":"http://www.securityfocus.com/bid/79899"},{"name":"1034899","refsource":"SECTRACK","url":"http://www.securitytracker.com/id/1034899"},{"name":"openSUSE-SU-2016:1008","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html"},{"name":"https://bugzilla.redhat.com/show_bug.cgi?id=1295287","refsource":"CONFIRM","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1295287"},{"name":"DSA-3434","refsource":"DEBIAN","url":"http://www.debian.org/security/2016/dsa-3434"},{"name":"SUSE-SU-2016:1040","refsource":"SUSE","url":"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00033.html"}]}}}},"cveMetadata":{"assignerOrgId":"79363d38-fa19-49d1-9214-5f28da3f3ac5","assignerShortName":"debian","cveId":"CVE-2015-8709","datePublished":"2016-02-08T02:00:00.000Z","dateReserved":"2015-12-31T00:00:00.000Z","dateUpdated":"2024-08-06T08:29:20.934Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"nvd":{"publishedDate":"2016-02-08 03:59:05","lastModifiedDate":"2026-05-06 22:30:45","problem_types":["CWE-264","n/a"],"metrics":{"cvssMetricV30":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:M/Au:N/C:C/I:C/A:C","baseScore":6.9,"accessVector":"LOCAL","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"},"baseSeverity":"MEDIUM","exploitabilityScore":3.4,"impactScore":10,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndIncluding":"4.4.1","matchCriteriaId":"EDD97C46-E284-47DB-B96A-3B8D5013F2F7"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2015","CveId":"8709","Ordinal":"1","Title":"CVE-2015-8709","CVE":"CVE-2015-8709","Year":"2015"},"notes":[{"CveYear":"2015","CveId":"8709","Ordinal":"1","NoteData":"kernel/ptrace.c in the Linux kernel through 4.4.1 mishandles uid and gid mappings, which allows local users to gain privileges by establishing a user namespace, waiting for a root process to enter that namespace with an unsafe uid or gid, and then using the ptrace system call.  NOTE: the vendor states \"there is no kernel bug here.","Type":"Description","Title":"CVE-2015-8709"},{"CveYear":"2015","CveId":"8709","Ordinal":"2","NoteData":"2016-02-07","Type":"Other","Title":"Published"},{"CveYear":"2015","CveId":"8709","Ordinal":"3","NoteData":"2017-11-03","Type":"Other","Title":"Modified"}]}}}