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Vulnerability record · CVE-2015-8539 · published 8 February 2016

CVE-2015-8539: Canonical ubuntu linux improper privilege management vulnerability

Canonical · Ubuntu Linux

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.

7.8 CVSS 3.1 High EPSS 0.42% · top 65.6% CWE-269 · Improper privilege management
7.8CVSS 3.1 base score, v2 7.2
0.42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
48References
17 Jun 2026Last modified by NVD

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 security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bd Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00008.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00011.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html Third Party Advisory
http://www.openwall.com/lists/oss-security/2015/12/09/1 Issue TrackingMailing ListPatchThird Party Advisory
https://access.redhat.com/errata/RHSA-2018:0151 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0152 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0181 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1284450 Issue TrackingThird Party Advisory
https://github.com/torvalds/linux/commit/096fe9eaea40a17e125569f9e657e34cdb6d73bd Issue TrackingPatchVendor Advisory
https://usn.ubuntu.com/3798-1/ Third Party Advisory
https://usn.ubuntu.com/3798-2/ Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bd Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00008.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00011.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2015-8539), CISA KEV, FIRST EPSS (scores of 2026-10-03). This page is refreshed as NVD updates the record.