CVE-2015-8539

HIGH

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.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bd

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00008.html

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00011.html

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html

http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html

http://www.openwall.com/lists/oss-security/2015/12/09/1

https://access.redhat.com/errata/RHSA-2018:0151

https://access.redhat.com/errata/RHSA-2018:0152

https://access.redhat.com/errata/RHSA-2018:0181

https://bugzilla.redhat.com/show_bug.cgi?id=1284450

https://github.com/torvalds/linux/commit/096fe9eaea40a17e125569f9e657e34cdb6d73bd

https://usn.ubuntu.com/3798-1/

https://usn.ubuntu.com/3798-2/

Details

Source: MITRE

Published: 2016-02-08

Updated: 2018-10-30

Type: CWE-264

Risk Information

CVSS v2.0

Base Score: 7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH