Vulnerability CVE-2015-8539

Vulnerability CVE-2015-8539

Published: 2016-02-07 Modified: 2016-02-08

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.

Type:

CWE-264

(Permissions, Privileges, and Access Controls)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score	Impact Subscore	Exploitability Subscore
7.2/10	10/10	3.9/10

Exploit range	Attack complexity	Authentication
Local	Low	No required
Confidentiality impact	Integrity impact	Availability impact
Complete	Complete	Complete

Affected software
Novell -> Suse linux enterprise real time extension
Linux -> Linux kernel

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/

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

CWE-264

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

7.2/10

10/10

3.9/10

Local

Low

No required

Complete

Complete

Complete

Affected software

References: