Vulnerability in Linux Kernel
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (47.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Linux Kernel
- Novell SUSE Linux Enterprise Real Time Extension — versions 12.0
- Oracle Linux — versions 5.0, 6, 7
- Oracle Vm Server — versions 3.3, 3.4
- Red Hat Enterprise Linux — versions 6.0
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux For Real Time — versions 7.0
- Red Hat Enterprise Linux Hpc Node — versions 7.0
- Red Hat Enterprise Linux Hpc Node Eus — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
References
- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html (Vendor Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00022.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00023.html (vendor-advisory)
- www.ubuntu.com/usn/USN-3054-1 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00017.html (vendor-advisory)
- rhn.redhat.com/errata/RHSA-2016-1657.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00008.html (vendor-advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html (Third Party Advisory)
- www.ubuntu.com/usn/USN-3051-1 (vendor-advisory)
- rhn.redhat.com/errata/RHSA-2016-2128.html (vendor-advisory)
Frequently asked questions
- What is CVE-2016-4470?
- CVE-2016-4470 is a medium-severity vulnerability in Linux Kernel. CVSS score: 5.5/10. Published 2016-06-27.
- How severe is CVE-2016-4470?
- Medium severity. CVSS v3 base score is 5.5 out of 10.