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Vulnerability Details : CVE-2016-6198

The filesystem layer in the Linux kernel before 4.5.5 proceeds with post-rename operations after an OverlayFS file is renamed to a self-hardlink, which allows local users to cause a denial of service (system crash) via a rename system call, related to fs/namei.c and fs/open.c.
Publish Date : 2016-08-06 Last Update Date : 2018-01-04
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- CVSS Scores & Vulnerability Types

CVSS Score
4.9
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 284

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2016:1847: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20161847 unix
RHSA-2016:1875: kernel-rt security and bug fix update (Important) oval:com.redhat.rhsa:def:20161875 unix
RHSA-2016:2574: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20162574 unix
RHSA-2016:2584: kernel-rt security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20162584 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2016-6198

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 4.5.4 Version Details Vulnerabilities
2 OS Oracle Linux 6.0 Version Details Vulnerabilities
3 Application Oracle Vm Server 3.4 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 1
Oracle Linux 1
Oracle Vm Server 1

- References For CVE-2016-6198

https://github.com/torvalds/linux/commit/9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca CONFIRM
http://www.securitytracker.com/id/1036273
SECTRACK 1036273
https://bugzilla.redhat.com/show_bug.cgi?id=1355654 CONFIRM
https://github.com/torvalds/linux/commit/54d5ca871e72f2bb172ec9323497f01cd5091ec7 CONFIRM
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html CONFIRM
http://www.securityfocus.com/bid/91709
BID 91709 Linux Kernel Multiple Denial of Service Vulnerabilities Release Date:2016-08-30
http://rhn.redhat.com/errata/RHSA-2016-2574.html
REDHAT RHSA-2016:2574
http://rhn.redhat.com/errata/RHSA-2016-2584.html
REDHAT RHSA-2016:2584
http://rhn.redhat.com/errata/RHSA-2016-1875.html
REDHAT RHSA-2016:1875
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5 CONFIRM
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html CONFIRM
http://www.openwall.com/lists/oss-security/2016/07/11/8
MLIST [oss-security] 20160711 Re: cvs request: local DoS using rename syscall on overlayfs on top of xfs to crash the kernel - Linux kernel
http://rhn.redhat.com/errata/RHSA-2016-1847.html
REDHAT RHSA-2016:1847
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54d5ca871e72f2bb172ec9323497f01cd5091ec7 CONFIRM
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca CONFIRM

- Metasploit Modules Related To CVE-2016-6198

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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