CVE-2016-6213

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

fs/namespace.c in the Linux kernel before 4.9 does not restrict how many mounts may exist in a mount namespace, which allows local users to cause a denial of service (memory consumption and deadlock) via MS_BIND mount system calls, as demonstrated by a loop that triggers exponential growth in the number of mounts.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d29216842a85c7970c536108e093963f02714498

http://www.openwall.com/lists/oss-security/2016/07/13/8

http://www.securityfocus.com/bid/91754

https://access.redhat.com/errata/RHSA-2017:1842

https://access.redhat.com/errata/RHSA-2017:2077

https://bugzilla.redhat.com/show_bug.cgi?id=1356471

https://github.com/torvalds/linux/commit/d29216842a85c7970c536108e093963f02714498

Details

Source: MITRE

Published: 2016-12-28

Updated: 2018-01-05

Type: CWE-400

Risk Information

CVSS v2

Base Score: 4.7

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

Impact Score: 6.9

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3

Base Score: 4.7

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

Impact Score: 3.6

Exploitability Score: 1

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 4.8.15 (inclusive)

Tenable Plugins

View all (22 total)

IDNameProductFamilySeverity
124837EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1516)NessusHuawei Local Security Checks
critical
106469OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0015) (BlueBorne) (Meltdown) (Spectre) (Stack Clash)NessusOracleVM Local Security Checks
critical
105248OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0174) (BlueBorne) (Dirty COW) (Stack Clash)NessusOracleVM Local Security Checks
high
105247Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3659) (BlueBorne) (Dirty COW) (Stack Clash)NessusOracle Linux Local Security Checks
high
102774OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0145) (Stack Clash)NessusOracleVM Local Security Checks
critical
102773Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3609) (Stack Clash)NessusOracle Linux Local Security Checks
critical
102734CentOS 7 : kernel (CESA-2017:1842) (Stack Clash)NessusCentOS Local Security Checks
high
102645Scientific Linux Security Update : kernel on SL7.x x86_64 (20170801)NessusScientific Linux Local Security Checks
high
102573OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0143)NessusOracleVM Local Security Checks
high
102572Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3605)NessusOracle Linux Local Security Checks
high
102511Oracle Linux 7 : kernel (ELSA-2017-1842-1) (Stack Clash)NessusOracle Linux Local Security Checks
critical
102281Oracle Linux 7 : kernel (ELSA-2017-1842) (Stack Clash)NessusOracle Linux Local Security Checks
high
102151RHEL 7 : kernel-rt (RHSA-2017:2077)NessusRed Hat Local Security Checks
high
102143RHEL 7 : kernel (RHSA-2017:1842) (Stack Clash)NessusRed Hat Local Security Checks
high
96000Ubuntu 16.10 : linux-raspi2 vulnerabilities (USN-3162-2)NessusUbuntu Local Security Checks
critical
95999Ubuntu 16.10 : linux vulnerabilities (USN-3162-1)NessusUbuntu Local Security Checks
critical
95998Ubuntu 16.04 LTS : linux-snapdragon vulnerabilities (USN-3161-4)NessusUbuntu Local Security Checks
critical
95997Ubuntu 16.04 LTS : linux-raspi2 vulnerabilities (USN-3161-3)NessusUbuntu Local Security Checks
critical
95996Ubuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-3161-2)NessusUbuntu Local Security Checks
critical
95995Ubuntu 16.04 LTS : linux vulnerabilities (USN-3161-1)NessusUbuntu Local Security Checks
critical
95994Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-3160-2)NessusUbuntu Local Security Checks
medium
95993Ubuntu 14.04 LTS : linux vulnerabilities (USN-3160-1)NessusUbuntu Local Security Checks
medium