Vulnerability Description
The IPT_SO_SET_REPLACE setsockopt implementation in the netfilter subsystem in the Linux kernel before 4.6 allows local users to cause a denial of service (out-of-bounds read) or possibly obtain sensitive information from kernel heap memory by leveraging in-container root access to provide a crafted offset value that leads to crossing a ruleset blob boundary.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 4.5.5 |
| Oracle | Linux | 7 |
| Canonical | Ubuntu Linux | 12.04 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6e94e0
- 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-2016-1847.html
- http://rhn.redhat.com/errata/RHSA-2016-1875.html
- http://rhn.redhat.com/errata/RHSA-2016-1883.html
- http://rhn.redhat.com/errata/RHSA-2017-0036.html
- http://www.debian.org/security/2016/dsa-3607
- http://www.openwall.com/lists/oss-security/2016/06/24/5
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.hThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.h
- http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.htm
- http://www.securityfocus.com/bid/91451
- http://www.securitytracker.com/id/1036171
- http://www.ubuntu.com/usn/USN-3016-1Third Party Advisory
FAQ
What is CVE-2016-4998?
CVE-2016-4998 is a vulnerability with a CVSS score of 7.1 (HIGH). The IPT_SO_SET_REPLACE setsockopt implementation in the netfilter subsystem in the Linux kernel before 4.6 allows local users to cause a denial of service (out-of-bounds read) or possibly obtain sensi...
How severe is CVE-2016-4998?
CVE-2016-4998 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-4998?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Oracle Linux, Canonical Ubuntu Linux.