CVE-2016-6198

Published on: 08/06/2016 12:00:00 AM UTC

Last Modified on: 03/23/2021 11:27:12 PM UTC

CVE-2016-6198

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

Certain versions of Linux Kernel from Linux contain the following vulnerability:

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.

CVE-2016-6198 has been assigned by [email protected] to track the vulnerability - currently rated as MEDIUM severity.

CVSS3 Score: 5.5 - MEDIUM

Attack Vector ^ⓘ	Attack Complexity	Privileges Required	User Interaction
LOCAL	LOW	LOW	NONE
Scope	Confidentiality Impact	Integrity Impact	Availability Impact
UNCHANGED	NONE	NONE	HIGH

CVSS2 Score: 4.9 - MEDIUM

Access Vector^ⓘ	Access Complexity	Authentication
LOCAL	LOW	NONE
Confidentiality Impact	Integrity Impact	Availability Impact
NONE	NONE	COMPLETE

CVE References

Description	Tags ^ⓘ	Link
Bug 1355654 – CVE-2016-6198 kernel: vfs: missing detection of hardlinks in vfs_rename() on overlayfs	Issue Tracking bugzilla.redhat.com text/html	CONFIRM bugzilla.redhat.com/show_bug.cgi?id=1355654
oss-security - Re: cvs request: local DoS using rename syscall on overlayfs on top of xfs to crash the kernel - Linux kernel	Exploit Mailing List Third Party Advisory www.openwall.com text/html	MLIST [oss-security] 20160711 Re: cvs request: local DoS using rename syscall on overlayfs on top of xfs to crash the kernel - Linux kernel
kernel/git/torvalds/linux.git - Linux kernel source tree	Issue Tracking Patch git.kernel.org text/html	CONFIRM git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54d5ca871e72f2bb172ec9323497f01cd5091ec7
Oracle Linux Bulletin - July 2016	Third Party Advisory web.archive.org text/html Inactive LinkNot Archived	CONFIRM www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
Linux Kernel xfsoverlay Rename Bugs Let Local Users Cause Denial of Service Conditions on the Target System - SecurityTracker	www.securitytracker.com text/html	SECTRACK 1036273
Linux Kernel Multiple Denial of Service Vulnerabilities	cve.report (archive) text/html	BID 91709
vfs: rename: check backing inode being equal · torvalds/[email protected] · GitHub	Issue Tracking Patch github.com text/html	CONFIRM github.com/torvalds/linux/commit/9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca
Red Hat Customer Portal	web.archive.org text/html Inactive LinkNot Archived	REDHAT RHSA-2016:2574
Oracle VM Server for x86 Bulletin - July 2016	Vendor Advisory web.archive.org text/html Inactive LinkNot Archived	CONFIRM www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
vfs: add vfs_select_inode() helper · torvalds/[email protected] · GitHub	Issue Tracking Patch github.com text/html	CONFIRM github.com/torvalds/linux/commit/54d5ca871e72f2bb172ec9323497f01cd5091ec7
Red Hat Customer Portal	web.archive.org text/html Inactive LinkNot Archived	REDHAT RHSA-2016:1875
	Release Notes www.kernel.org text/plain	CONFIRM www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5
Red Hat Customer Portal	web.archive.org text/html Inactive LinkNot Archived	REDHAT RHSA-2016:1847
Red Hat Customer Portal	web.archive.org text/html Inactive LinkNot Archived	REDHAT RHSA-2016:2584
kernel/git/torvalds/linux.git - Linux kernel source tree	Issue Tracking Patch git.kernel.org text/html	CONFIRM git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca

By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].

There are currently no QIDs associated with this CVE

Known Affected Configurations (CPE V2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Operating System	Linux	Linux Kernel	All	All	All	All
Operating System	Oracle	Linux	6	All	All	All
Operating System	Oracle	Linux	6	All	All	All
Application	Oracle	Vm Server	3.4	All	All	All
Application	Oracle	Vm Server	3.4	All	All	All

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*:
cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*:
cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*:
cpe:2.3:a:oracle:vm_server:3.4:*:*:*:*:*:*:*:
cpe:2.3:a:oracle:vm_server:3.4:*:*:*:*:*:*:*:

No vendor comments have been submitted for this CVE