Medium severity · published Aug 6, 2016
CVE-2016-6198
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…
5.5
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
through 4.5.4 · source: NVD
LI
Linux · Oracle
6 · source: NVD
VS
VM Server · Oracle
3.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-6198
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-6198
Issue Tracking
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54d5ca871e72f2bb172ec9323497f01cd5091ec7
Issue Tracking
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca
rhn.redhat.com
http://rhn.redhat.com/errata/RHSA-2016-1847.html
rhn.redhat.com
http://rhn.redhat.com/errata/RHSA-2016-1875.html
rhn.redhat.com
http://rhn.redhat.com/errata/RHSA-2016-2574.html
rhn.redhat.com
http://rhn.redhat.com/errata/RHSA-2016-2584.html
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