5.5
MEDIUM
CVE-2016-6198
Linux Kernel OverlayFS Hardlink Renamer DoS Vulnerability
Description

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.

INFO

Published Date :

Aug. 6, 2016, 8:59 p.m.

Last Modified :

Dec. 27, 2019, 4:08 p.m.

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2016-6198 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2016-6198 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Oracle linux
2 Oracle vm_server
1 Linux linux_kernel

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

None

Python

Updated: 1 month ago
9 stars 1 fork 1 watcher
Born at : Aug. 30, 2017, 2:37 p.m. This repo has been linked 1269 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-6198 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-6198 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CPE Deprecation Remap by [email protected]

    Dec. 27, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:oracle:linux:6.0:*:*:*:*:*:*:* OR *cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jan. 05, 2018

    Action Type Old Value New Value
    Added Reference http://rhn.redhat.com/errata/RHSA-2016-2584.html [No Types Assigned]
    Added Reference http://rhn.redhat.com/errata/RHSA-2016-2574.html [No Types Assigned]
    Added Reference http://rhn.redhat.com/errata/RHSA-2016-1875.html [No Types Assigned]
    Added Reference http://rhn.redhat.com/errata/RHSA-2016-1847.html [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 01, 2017

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1036273 [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/91709 [No Types Assigned]
  • Modified Analysis by [email protected]

    Sep. 30, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:o:oracle:linux:6.0:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:* Configuration 3 OR *cpe:2.3:o:linux:linux_kernel:4.5.4:*:*:*:*:*:*:* (and previous) Configuration 1 OR *cpe:2.3:o:linux:linux_kernel:4.5.4:*:*:*:*:*:*:* (and previous) Configuration 2 OR *cpe:2.3:o:oracle:linux:6.0:*:*:*:*:*:*:* Configuration 3 OR *cpe:2.3:a:oracle:vm_server:3.4:*:*:*:*:*:*:*
  • Initial Analysis by [email protected]

    Sep. 30, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:o:linux:linux_kernel:4.5.4:*:*:*:*:*:*:* (and previous) Configuration 3 OR *cpe:2.3:o:oracle:linux:6.0:*:*:*:*:*:*:* Configuration 1 OR *cpe:2.3:o:oracle:linux:6.0:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:a:oracle:vm_server:3.4:*:*:*:*:*:*:* Configuration 3 OR *cpe:2.3:o:linux:linux_kernel:4.5.4:*:*:*:*:*:*:* (and previous)
  • Modified Analysis by [email protected]

    Sep. 28, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:o:linux:linux_kernel:4.5.4:*:*:*:*:*:*:* (and previous) Configuration 2 OR *cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:* Configuration 1 OR *cpe:2.3:o:oracle:linux:6.0:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:* Configuration 3 OR *cpe:2.3:o:linux:linux_kernel:4.5.4:*:*:*:*:*:*:* (and previous)
    Changed Reference Type http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html No Types Assigned http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html Third Party Advisory
  • CVE Modified by [email protected]

    Sep. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
  • Modified Analysis by [email protected]

    Sep. 12, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:o:linux:linux_kernel:4.5.4:*:*:*:*:*:*:* (and previous) Configuration 1 OR *cpe:2.3:o:linux:linux_kernel:4.5.4:*:*:*:*:*:*:* (and previous) Configuration 2 OR *cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*
    Changed Reference Type http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html No Types Assigned http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html Vendor Advisory
  • CVE Modified by [email protected]

    Sep. 09, 2016

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
  • Modified Analysis by [email protected]

    Aug. 11, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:o:linux:linux_kernel:4.5.4:*:*:*:*:*:*:* (and previous)
    Added CVSS V2 (AV:L/AC:L/Au:N/C:N/I:N/A:C)
    Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54d5ca871e72f2bb172ec9323497f01cd5091ec7 No Types Assigned http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54d5ca871e72f2bb172ec9323497f01cd5091ec7 Issue Tracking, Patch
    Changed Reference Type https://github.com/torvalds/linux/commit/54d5ca871e72f2bb172ec9323497f01cd5091ec7 No Types Assigned https://github.com/torvalds/linux/commit/54d5ca871e72f2bb172ec9323497f01cd5091ec7 Issue Tracking, Patch
    Changed Reference Type http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5 No Types Assigned http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5 Release Notes
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1355654 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1355654 Issue Tracking
    Changed Reference Type https://github.com/torvalds/linux/commit/9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca No Types Assigned https://github.com/torvalds/linux/commit/9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca Issue Tracking, Patch
    Changed Reference Type http://www.openwall.com/lists/oss-security/2016/07/11/8 No Types Assigned http://www.openwall.com/lists/oss-security/2016/07/11/8 Third Party Advisory, Mailing List, Exploit
    Changed Reference Type http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca No Types Assigned http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca Issue Tracking, Patch
    Added CWE CWE-284
  • Initial Analysis by [email protected]

    Aug. 10, 2016

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-6198 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.08236

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability