CVE-2016-4470

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.

5.5

CVSS

Severity: Medium

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.06%

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Affected: n/a n/a

References

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

Frequently Asked Questions

What is the severity of CVE-2016-4470?: CVE-2016-4470 has been scored as a medium severity vulnerability.
How to fix CVE-2016-4470?: To fix CVE-2016-4470, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-4470 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2016-4470 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.