01 Record

CVE-2015-8539

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

UnratedPUBLISHEDCNA: mitre

CNA base scoreUnratedNo CNA CVSS vector

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02 Description

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

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.42% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 36.3% of scored records. A rank, not a probability.
NVD base score: 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2016-02-08 02:00Z10 YR AGO

Last updated

2024-08-06 08:20Z2 YR AGO

Reserved

2015-12-10

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-269Improper Privilege ManagementClass
CWE-667Improper LockingClass

Data version

5.1

Document digest

a5e58172cd09af2eb71ad11fc5659326e782102ee4b8ca9addc4041439d83732

05 Affected products

VendorProductVersionsPlatforms

canonicalubuntu_linuxNot specified—

linuxlinux_kernelNot specified—

redhatenterprise_linuxNot specified—

redhatenterprise_mrgNot specified—

redhatrhel_extras_rtNot specified—

suselinux_enterprise_real_time_extensionNot specified—

06 References

lists.opensuse.orgSUSE-SU-2016:0337http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.htmlvendor-advisoryx_refsource_SUSE
bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1284450x_refsource_CONFIRM
access.redhat.comRHSA-2018:0181https://access.redhat.com/errata/RHSA-2018:0181vendor-advisoryx_refsource_REDHAT
lists.opensuse.orgSUSE-SU-2016:0434http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.htmlvendor-advisoryx_refsource_SUSE
git.kernel.orghttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bdx_refsource_CONFIRM
github.comhttps://github.com/torvalds/linux/commit/096fe9eaea40a17e125569f9e657e34cdb6d73bdx_refsource_CONFIRM
www.openwall.com[oss-security] 20151208 CVE request - Linux kernel - Fix handling of stored error in a negatively instantiated user keyhttp://www.openwall.com/lists/oss-security/2015/12/09/1mailing-listx_refsource_MLIST
lists.opensuse.orgSUSE-SU-2016:0380http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.htmlvendor-advisoryx_refsource_SUSE
access.redhat.comRHSA-2018:0152https://access.redhat.com/errata/RHSA-2018:0152vendor-advisoryx_refsource_REDHAT
lists.opensuse.orgSUSE-SU-2016:0335http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.htmlvendor-advisoryx_refsource_SUSE
lists.opensuse.orgSUSE-SU-2016:1102http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.htmlvendor-advisoryx_refsource_SUSE
lists.opensuse.orgSUSE-SU-2016:0383http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.htmlvendor-advisoryx_refsource_SUSE
lists.opensuse.orgSUSE-SU-2016:0386http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.htmlvendor-advisoryx_refsource_SUSE
lists.opensuse.orgSUSE-SU-2016:0339http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00011.htmlvendor-advisoryx_refsource_SUSE
access.redhat.comRHSA-2018:0151https://access.redhat.com/errata/RHSA-2018:0151vendor-advisoryx_refsource_REDHAT
lists.opensuse.orgSUSE-SU-2016:2074http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.htmlvendor-advisoryx_refsource_SUSE
lists.opensuse.orgSUSE-SU-2016:0384http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.htmlvendor-advisoryx_refsource_SUSE
usn.ubuntu.comUSN-3798-1https://usn.ubuntu.com/3798-1/vendor-advisoryx_refsource_UBUNTU
lists.opensuse.orgSUSE-SU-2016:0387http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.htmlvendor-advisoryx_refsource_SUSE
lists.opensuse.orgSUSE-SU-2016:0336http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00008.htmlvendor-advisoryx_refsource_SUSE
usn.ubuntu.comUSN-3798-2https://usn.ubuntu.com/3798-2/vendor-advisoryx_refsource_UBUNTU
lists.opensuse.orgSUSE-SU-2016:0381http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.htmlvendor-advisoryx_refsource_SUSE
lists.opensuse.orgSUSE-SU-2016:1937http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.htmlvendor-advisoryx_refsource_SUSE
lists.opensuse.orgSUSE-SU-2016:0911http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.htmlvendor-advisoryx_refsource_SUSE

07 Fixed in

Ubuntu 14.04 LTS

linux
Fixed in 3.13.0-161.211

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.