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CVE-2016-6198

16
FAUCET Score

CVE-2016-6198 describes a denial-of-service vulnerability in the Linux kernel's filesystem layer, specifically affecting OverlayFS in versions prior to 4.5.5, as well as Oracle Linux and VM Server. This medium-severity flaw (CVSS 5.5) allows a local attacker to crash the system by performing a rename operation that creates a self-hardlink. There is no evidence of active exploitation, public exploit code, or significant community discussion or media coverage for this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.5.4CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6CPE matchmatch criteria
cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*
3.4CPE matchmatch criteria
cpe:2.3:a:oracle:vm_server:3.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.61%
Probability of exploitation in next 30 days
EPSS Percentile
45.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0061 is in the 94th percentile among its peer group of 15,940 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-327.36.1.rt56.237.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-514.rt56.420.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-327.36.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-514.el7
View patch
oraclevendor investigatingvia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: realtime-kernel

Vendor Advisories (1)

redhatCVE-2016-6198Moderate

kernel: vfs: missing detection of hardlinks in vfs_rename() on overlayfs

Jul 11, 2016

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Issue TrackingPatch
git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Issue TrackingPatch
rhn.redhat.com / errata/RHSA-2016-1847.html
rhn.redhat.com / errata/RHSA-2016-1875.html
rhn.redhat.com / errata/RHSA-2016-2574.html
rhn.redhat.com / errata/RHSA-2016-2584.html
bugzilla.redhat.com / show_bug.cgi
Issue Tracking
github.com / torvalds/linux/commit/54d5ca871e72f2bb172ec9323497f01cd5091ec7
Issue TrackingPatch
github.com / torvalds/linux/commit/9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca
Issue TrackingPatch
kernel.org / pub/linux/kernel/v4.x/ChangeLog-4.5.5
Release Notes
openwall.com / lists/oss-security/2016/07/11/8
ExploitMailing ListThird Party Advisory
oracle.com / technetwork/topics/security/linuxbulletinjul2016-3090544.html
Third Party Advisory
oracle.com / technetwork/topics/security/ovmbulletinjul2016-3090546.html
Vendor Advisory
securityfocus.com / bid/91709
securitytracker.com / id/1036273