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CVE-2016-6213

14
FAUCET Score

CVE-2016-6213 is a denial-of-service vulnerability in the Linux kernel (before version 4.9) that allows local users to exhaust memory and cause a system deadlock by creating an excessive number of mounts within a namespace. This vulnerability has a CVSS score of 4.7 (Medium), indicating a local attack vector with high attack complexity and a high impact on availability. There is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or KEV listing. While community discussion and media coverage are minimal, the vulnerability was reported by an OpenVZ developer.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.8.15CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.7MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 78th percentile among its peer group of 1,297 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-693.rt56.617.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-693.el7
View patch

Vendor Advisories (1)

redhatCVE-2016-6213Low

kernel: Overflowing kernel mount table using shared bind mount

Jul 13, 2016

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
PatchVendor Advisory
access.redhat.com / errata/RHSA-2017:1842
access.redhat.com / errata/RHSA-2017:2077
bugzilla.redhat.com / show_bug.cgi
Issue Tracking
github.com / torvalds/linux/commit/d29216842a85c7970c536108e093963f02714498
Patch
openwall.com / lists/oss-security/2016/07/13/8
Mailing List
securityfocus.com / bid/91754