CVE-2016-4470 Information

Description

The key_reject_and_link function in security/keys/key.c in the Linux kernel through 4.6.3 does not ensure that a certain data structure is initialized which allows local users to cause a denial of service (system crash) via vectors involving a crafted keyctl request2 command.

CVSS Vector

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

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=38327424b40bcebe2de92d07312c89360ac9229a http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00008.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00009.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00012.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00013.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00014.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00015.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00016.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00017.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00018.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00019.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00020.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00021.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00022.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00023.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00026.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00027.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html http://rhn.redhat.com/errata/RHSA-2016-1532.html http://rhn.redhat.com/errata/RHSA-2016-1539.html http://rhn.redhat.com/errata/RHSA-2016-1541.html http://rhn.redhat.com/errata/RHSA-2016-1657.html http://rhn.redhat.com/errata/RHSA-2016-2006.html http://rhn.redhat.com/errata/RHSA-2016-2074.html http://rhn.redhat.com/errata/RHSA-2016-2076.html http://rhn.redhat.com/errata/RHSA-2016-2128.html http://rhn.redhat.com/errata/RHSA-2016-2133.html http://www.debian.org/security/2016/dsa-3607 http://www.openwall.com/lists/oss-security/2016/06/15/11 http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html http://www.securitytracker.com/id/1036763 http://www.ubuntu.com/usn/USN-3049-1 http://www.ubuntu.com/usn/USN-3050-1 http://www.ubuntu.com/usn/USN-3051-1 http://www.ubuntu.com/usn/USN-3052-1 http://www.ubuntu.com/usn/USN-3053-1 http://www.ubuntu.com/usn/USN-3054-1 http://www.ubuntu.com/usn/USN-3055-1 http://www.ubuntu.com/usn/USN-3056-1 http://www.ubuntu.com/usn/USN-3057-1 https://bugzilla.redhat.com/show_bug.cgi?id=1341716 https://github.com/torvalds/linux/commit/38327424b40bcebe2de92d07312c89360ac9229a

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5