CVE-2015-8539 Information

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 Vector

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

Reference

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/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8