ubuntu-cve-2015-8539
Vulnerability from osv_ubuntu
Published
2016-02-07 00:00
Modified
2026-04-22 07:37
Summary
Details
The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c.
Severity
7.8 (High)
7.8 (High)
N/A (UNKNOWN)
References
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],
"aliases": [],
"details": "The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c.",
"id": "UBUNTU-CVE-2015-8539",
"modified": "2026-04-22T07:37:51Z",
"published": "2016-02-07T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2015-8539"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1284450"
},
{
"type": "REPORT",
"url": "http://www.openwall.com/lists/oss-security/2015/12/09/1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-3798-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-3798-2"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2015-8539"
}
],
"related": [
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"USN-3798-2"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
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]
}
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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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