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CVE-2016-6197

Published: Aug 6, 2016Updated: May 6, 2026 Sources: CVE List NVDCWE-20
NVD MITRE
5.5CVSSMEDIUM
EPSS Score
0.5%
Top 61.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

fs/overlayfs/dir.c in the OverlayFS filesystem implementation in the Linux kernel before 4.6 does not properly verify the upper dentry before proceeding with unlink and rename system-call processing, which allows local users to cause a denial of service (system crash) via a rename system call that specifies a self-hardlink.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-20

Affected Products

linuxoracle
On-prem
Databases / cache-message-queue
linux kernellinux
On-premOS
Operating Systems
vm serveroracle
On-prem
Databases / relational
n/an/a
oraclecommercialUSDatabasesaka oracle corp.
linuxoss-projectOperating Systemsaka the linux kernel

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
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References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=11f3710417d026ea2f4fcf362d866342c5274185
git.kernel.org
http://rhn.redhat.com/errata/RHSA-2016-1847.html
rhn.redhat.com
http://rhn.redhat.com/errata/RHSA-2016-1875.html
rhn.redhat.com
and 11 more references View all →

Timeline

Published
Aug 6, 2016
Last Updated
May 6, 2026

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