CVE-2016-6198

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54d5ca871e72f2bb172ec9323497f01cd5091ec7

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca

http://rhn.redhat.com/errata/RHSA-2016-1847.html

http://rhn.redhat.com/errata/RHSA-2016-1875.html

http://rhn.redhat.com/errata/RHSA-2016-2574.html

http://rhn.redhat.com/errata/RHSA-2016-2584.html

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5

http://www.openwall.com/lists/oss-security/2016/07/11/8

http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html

http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html

http://www.securityfocus.com/bid/91709

http://www.securitytracker.com/id/1036273

https://bugzilla.redhat.com/show_bug.cgi?id=1355654

https://github.com/torvalds/linux/commit/54d5ca871e72f2bb172ec9323497f01cd5091ec7

https://github.com/torvalds/linux/commit/9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca

Details

Source: MITRE

Published: 2016-08-06

Updated: 2019-12-27

Type: CWE-284

Risk Information

CVSS v2

Base Score: 4.9

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 4.5.4 (inclusive)

Configuration 2

OR

cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*

Configuration 3

OR

cpe:2.3:a:oracle:vm_server:3.4:*:*:*:*:*:*:*

Tenable Plugins

View all (15 total)

IDNameProductFamilySeverity
125100EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1494)NessusHuawei Local Security Checks
high
124985EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1532)NessusHuawei Local Security Checks
high
95841Scientific Linux Security Update : kernel on SL7.x x86_64 (20161103)NessusScientific Linux Local Security Checks
critical
95321CentOS 7 : kernel (CESA-2016:2574)NessusCentOS Local Security Checks
critical
94697Oracle Linux 7 : kernel (ELSA-2016-2574)NessusOracle Linux Local Security Checks
critical
94547RHEL 7 : kernel-rt (RHSA-2016:2584)NessusRed Hat Local Security Checks
critical
94537RHEL 7 : kernel (RHSA-2016:2574)NessusRed Hat Local Security Checks
critical
93679OracleVM 3.4 : Unbreakable / etc (OVMSA-2016-0100)NessusOracleVM Local Security Checks
critical
93594CentOS 7 : kernel (CESA-2016:1847)NessusCentOS Local Security Checks
high
93556RHEL 7 : kernel-rt (RHSA-2016:1875)NessusRed Hat Local Security Checks
high
93555RHEL 7 : kernel (RHSA-2016:1847)NessusRed Hat Local Security Checks
high
93501Oracle Linux 7 : kernel (ELSA-2016-1847)NessusOracle Linux Local Security Checks
high
93148Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2016-3596)NessusOracle Linux Local Security Checks
critical
92658OracleVM 3.4 : kernel-uek (OVMSA-2016-0091)NessusOracleVM Local Security Checks
high
92656Oracle Linux 6 / 7 : kernel-uek (ELSA-2016-3587)NessusOracle Linux Local Security Checks
high