CVE-2016-4794 (GCVE-0-2016-4794)
Vulnerability from cvelistv5 – Published: 2016-05-23 10:00 – Updated: 2024-08-06 00:39
VLAI
EPSS
VEX
Summary
Use-after-free vulnerability in mm/percpu.c in the Linux kernel through 4.6 allows local users to cause a denial of service (BUG) or possibly have unspecified other impact via crafted use of the mmap and bpf system calls.
Severity
7.8 (High)
CWE
- n/a
Assigner
References
12 references
| URL | Tags |
|---|---|
| http://www.ubuntu.com/usn/USN-3054-1 | vendor-advisoryx_refsource_UBUNTU |
| https://source.android.com/security/bulletin/2016… | x_refsource_CONFIRM |
| http://www.ubuntu.com/usn/USN-3053-1 | vendor-advisoryx_refsource_UBUNTU |
| http://www.ubuntu.com/usn/USN-3055-1 | vendor-advisoryx_refsource_UBUNTU |
| http://www.ubuntu.com/usn/USN-3056-1 | vendor-advisoryx_refsource_UBUNTU |
| http://www.openwall.com/lists/oss-security/2016/05/12/6 | mailing-listx_refsource_MLIST |
| http://rhn.redhat.com/errata/RHSA-2016-2584.html | vendor-advisoryx_refsource_REDHAT |
| http://rhn.redhat.com/errata/RHSA-2016-2574.html | vendor-advisoryx_refsource_REDHAT |
| https://lkml.org/lkml/2016/4/17/125 | mailing-listx_refsource_MLIST |
| https://bugzilla.redhat.com/show_bug.cgi?id=1335889 | x_refsource_CONFIRM |
| http://www.ubuntu.com/usn/USN-3057-1 | vendor-advisoryx_refsource_UBUNTU |
| http://www.securityfocus.com/bid/90625 | vdb-entryx_refsource_BID |
Date Public
2016-04-17 00:00
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"matchCriteriaId": "B5A6F2F3-4894-4392-8296-3B8DD2679084",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
"matchCriteriaId": "F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Use-after-free vulnerability in mm/percpu.c in the Linux kernel through 4.6 allows local users to cause a denial of service (BUG) or possibly have unspecified other impact via crafted use of the mmap and bpf system calls."
},
{
"lang": "es",
"value": "Vulnerabilidad de uso despu\u00e9s de liberaci\u00f3n de memoria en el kernel de Linux hasta la versi\u00f3n 4.6 permite a usuarios locales provocar una denegaci\u00f3n de servicio (BUG) o posiblemente tener otro impacto no especificado a trav\u00e9s del uso manipulado de llamadas de sistema mmap y bpf."
}
],
"evaluatorComment": "CWE-416: Use After Free",
"id": "CVE-2016-4794",
"lastModified": "2026-05-06T22:30:45.220",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.2,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2016-05-23T10:59:12.427",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "http://rhn.redhat.com/errata/RHSA-2016-2574.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "http://rhn.redhat.com/errata/RHSA-2016-2584.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Mailing List",
"Third Party Advisory"
],
"url": "http://www.openwall.com/lists/oss-security/2016/05/12/6"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securityfocus.com/bid/90625"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "http://www.ubuntu.com/usn/USN-3053-1"
},
{
"source": "cve@mitre.org",
"tags": [
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],
"url": "http://www.ubuntu.com/usn/USN-3054-1"
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{
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"url": "http://www.ubuntu.com/usn/USN-3055-1"
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{
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],
"url": "http://www.ubuntu.com/usn/USN-3056-1"
},
{
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"tags": [
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],
"url": "http://www.ubuntu.com/usn/USN-3057-1"
},
{
"source": "cve@mitre.org",
"tags": [
"Issue Tracking",
"Third Party Advisory",
"VDB Entry"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1335889"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://lkml.org/lkml/2016/4/17/125"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://source.android.com/security/bulletin/2016-12-01.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://rhn.redhat.com/errata/RHSA-2016-2574.html"
},
{
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"tags": [
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],
"url": "http://rhn.redhat.com/errata/RHSA-2016-2584.html"
},
{
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"tags": [
"Exploit",
"Mailing List",
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],
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
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},
{
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"tags": [
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],
"url": "http://www.ubuntu.com/usn/USN-3053-1"
},
{
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"tags": [
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],
"url": "http://www.ubuntu.com/usn/USN-3054-1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://www.ubuntu.com/usn/USN-3055-1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "http://www.ubuntu.com/usn/USN-3056-1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "http://www.ubuntu.com/usn/USN-3057-1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"Third Party Advisory",
"VDB Entry"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1335889"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://lkml.org/lkml/2016/4/17/125"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://source.android.com/security/bulletin/2016-12-01.html"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-28T11:30:24+00:00",
"cve": "CVE-2016-4794",
"id": "CVE-2016-4794",
"initial_release_date": "2016-04-17T00:00:00+00:00",
"product_status:fixed": "191",
"product_status:known_affected": "23",
"product_status:known_not_affected": "15",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Use after free in array_map_alloc",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-4794.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-01T02:16:29Z",
"cve": "CVE-2016-4794",
"id": "CVE-2016-4794",
"initial_release_date": "2023-02-15T05:02:20Z",
"product_status:known_affected": "3",
"product_status:known_not_affected": "481",
"product_status:recommended": "87",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2016-4794",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2016-4794.json",
"version": "21"
}
}
}
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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.
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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.
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