Vulnerability Report

CVE-2016-4470

Title: Redhat Enterprise Linux Denial of Service (DoS)

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2016-4470.

CWE Category NVD-CWE-noinfo

Published Date Jun 27, 2016

Modified Date Jun 17, 2026

Exploit Status Not Found

Score 5.5 CVSS v3.0

Exploit Probability (EPSS)

0.58%

Vulnerability Summary

CVE-2016-4470: 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.

Impacted Vendors

Reference Links

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 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

CVSS v3.0

Source Entity [email protected]

Severity MEDIUM

5.5

Attack Vector

LOCAL

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

4.9

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:L/AC:L/Au:N/C:N/I:N/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2016-4470 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

June 17, 2026 MODIFIED

Vulnerability data updated via NVD.

May 06, 2026 MODIFIED

Vulnerability data updated via NVD.

April 12, 2025 MODIFIED

Vulnerability data or affected products updated.

June 27, 2016 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.