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CVE-2015-8709 (GCVE-0-2015-8709)

Vulnerability from cvelistv5 – Published: 2016-02-08 02:00 – Updated: 2024-08-06 08:29 Disputed
VLAI
Summary
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.
Severity
7.0 (High)
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
URL Tags
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://lkml.org/lkml/2015/12/25/71 mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://marc.info/?l=linux-kernel&m=145204641422813&w=2 mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://www.openwall.com/lists/oss-security/2015/12/31/5 mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2015/1… mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://marc.info/?l=linux-kernel&m=145204362722256&w=2 mailing-listx_refsource_MLIST
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://www.securityfocus.com/bid/79899 vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1034899 vdb-entryx_refsource_SECTRACK
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://bugzilla.redhat.com/show_bug.cgi?id=1295287 x_refsource_CONFIRM
http://www.debian.org/security/2016/dsa-3434 vendor-advisoryx_refsource_DEBIAN
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
Date Public
2015-12-17 00:00
Show details on NVD website
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              "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",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2015-8709",
      "date": "2026-09-16",
      "epss": "0.00398",
      "percentile": "0.33547"
    },
    "fkie_nvd": {
      "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\"}]}]}]",
      "cveTags": "[{\"sourceIdentifier\": \"security@debian.org\", \"tags\": [\"disputed\"]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"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.\"}, {\"lang\": \"es\", \"value\": \"** DISPUTADA ** kernel/ptrace.c en el kernel de Linux hasta la versi\\u00f3n 4.4.1 no maneja correctamente el mapeo uid y gid, lo que permite a usuarios locales obtener privilegios estableciendo un espacio de nombres de usuario, a la espera de un proceso root para entrar ese espacio de nombres con un uid o gid inseguro, y despu\\u00e9s utilizando la llamada al sistema ptrace. NOTA: el vendedor afirma \\\"no hay ning\\u00fan error en el kernel aqu\\u00ed\\\".\"}]",
      "id": "CVE-2015-8709",
      "lastModified": "2024-11-21T02:39:00.150",
      "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\": 7.0, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.0, \"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\": 10.0, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false}]}",
      "published": "2016-02-08T03:59:05.887",
      "references": "[{\"url\": \"http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html\", \"source\": \"security@debian.org\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html\", \"source\": \"security@debian.org\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.html\", \"source\": \"security@debian.org\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00025.html\", \"source\": \"security@debian.org\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00026.html\", \"source\": \"security@debian.org\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00027.html\", \"source\": \"security@debian.org\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00028.html\", \"source\": \"security@debian.org\"}, {\"url\": 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      "sourceIdentifier": "security@debian.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-264\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2015-8709\",\"sourceIdentifier\":\"security@debian.org\",\"published\":\"2016-02-08T03:59:05.887\",\"lastModified\":\"2026-05-06T22:30:45.220\",\"vulnStatus\":\"Modified\",\"cveTags\":[{\"sourceIdentifier\":\"security@debian.org\",\"tags\":[\"disputed\"]}],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"},{\"lang\":\"es\",\"value\":\"** DISPUTADA ** kernel/ptrace.c en el kernel de Linux hasta la versi\u00f3n 4.4.1 no maneja correctamente el mapeo uid y gid, lo que permite a usuarios locales obtener privilegios estableciendo un espacio de nombres de usuario, a la espera de un proceso root para entrar ese espacio de nombres con un uid o gid inseguro, y despu\u00e9s utilizando la llamada al sistema ptrace. NOTA: el vendedor afirma \\\"no hay ning\u00fan error en el kernel aqu\u00ed\\\".\"}],\"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\":7.0,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"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\":10.0,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-264\"}]}],\"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\"}]}]}],\"references\":[{\"url\":\"http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00025.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00026.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00027.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00028.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00029.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00030.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00031.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00032.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00033.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00034.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00036.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00037.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html\",\"source\":\"security@debian.org\"},{\"url\":\"http://marc.info/?l=linux-kernel\u0026m=145204362722256\u0026w=2\",\"source\":\"security@debian.org\"},{\"url\":\"http://marc.info/?l=linux-kernel\u0026m=145204641422813\u0026w=2\",\"source\":\"security@debian.org\"},{\"url\":\"http://www.debian.org/security/2016/dsa-3434\",\"source\":\"security@debian.org\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2015/12/17/12\",\"source\":\"security@debian.org\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2015/12/31/5\",\"source\":\"security@debian.org\"},{\"url\":\"http://www.securityfocus.com/bid/79899\",\"source\":\"security@debian.org\"},{\"url\":\"http://www.securitytracker.com/id/1034899\",\"source\":\"security@debian.org\"},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=1295287\",\"source\":\"security@debian.org\"},{\"url\":\"https://lkml.org/lkml/2015/12/25/71\",\"source\":\"security@debian.org\"},{\"url\":\"http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00025.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://lists.opensuse.org/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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2025-11-21T16:24:18+00:00",
      "cve": "CVE-2015-8709",
      "id": "CVE-2015-8709",
      "initial_release_date": "2015-12-12T00:00:00+00:00",
      "product_status:known_not_affected": "55",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Kernel: ptrace: potential privilege escalation in user namespaces",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2015/cve-2015-8709.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-27T01:47:45Z",
      "cve": "CVE-2015-8709",
      "id": "CVE-2015-8709",
      "initial_release_date": "2023-02-15T05:11:21Z",
      "product_status:known_affected": "33",
      "product_status:known_not_affected": "372",
      "product_status:recommended": "264",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2015-8709",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2015-8709.json",
      "version": "27"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.