CVE-2015-8709 (GCVE-0-2015-8709)
Vulnerability from cvelistv5 – Published: 2016-02-08 02:00 – Updated: 2024-08-06 08:29 Disputed
VLAI
EPSS
VEX
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)
CWE
- n/a
Assigner
References
25 references
Date Public
2015-12-17 00:00
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"cvssData": {
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
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"vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
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},
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},
{
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{
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],
"sourceIdentifier": "security@debian.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-264"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"nvd": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "EDD97C46-E284-47DB-B96A-3B8D5013F2F7",
"versionEndIncluding": "4.4.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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": "2026-05-06T22:30:45.220",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 6.9,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.4,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
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}
],
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"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
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"confidentialityImpact": "HIGH",
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"scope": "UNCHANGED",
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"vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
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},
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}
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},
"published": "2016-02-08T03:59:05.887",
"references": [
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"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html"
},
{
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},
{
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},
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},
{
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},
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},
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"url": "http://marc.info/?l=linux-kernel\u0026m=145204641422813\u0026w=2"
},
{
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"url": "http://www.debian.org/security/2016/dsa-3434"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2015/12/17/12"
},
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"url": "http://www.openwall.com/lists/oss-security/2015/12/31/5"
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"url": "http://www.securityfocus.com/bid/79899"
},
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"url": "http://www.securitytracker.com/id/1034899"
},
{
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1295287"
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{
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}
],
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"vulnStatus": "Modified",
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{
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{
"lang": "en",
"value": "CWE-264"
}
],
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"type": "Primary"
}
]
}
},
"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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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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
| Author | Source | Type | Date | Other |
|---|
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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.