CVE-2016-6213medium
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://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
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 124837 | EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1516) | Nessus | Huawei Local Security Checks | critical |
| 106469 | OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0015) (BlueBorne) (Meltdown) (Spectre) (Stack Clash) | Nessus | OracleVM Local Security Checks | critical |
| 105248 | OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0174) (BlueBorne) (Dirty COW) (Stack Clash) | Nessus | OracleVM Local Security Checks | high |
| 105247 | Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3659) | Nessus | Oracle Linux Local Security Checks | high |
| 102774 | OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0145) (Stack Clash) | Nessus | OracleVM Local Security Checks | critical |
| 102773 | Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3609) | Nessus | Oracle Linux Local Security Checks | critical |
| 102734 | CentOS 7 : kernel (CESA-2017:1842) (Stack Clash) | Nessus | CentOS Local Security Checks | high |
| 102645 | Scientific Linux Security Update : kernel on SL7.x x86_64 (20170801) | Nessus | Scientific Linux Local Security Checks | high |
| 102573 | OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0143) | Nessus | OracleVM Local Security Checks | high |
| 102572 | Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3605) | Nessus | Oracle Linux Local Security Checks | high |
| 102511 | Oracle Linux 7 : kernel (ELSA-2017-1842-1) (Stack Clash) | Nessus | Oracle Linux Local Security Checks | critical |
| 102281 | Oracle Linux 7 : kernel (ELSA-2017-1842) | Nessus | Oracle Linux Local Security Checks | high |
| 102151 | RHEL 7 : kernel-rt (RHSA-2017:2077) | Nessus | Red Hat Local Security Checks | high |
| 102143 | RHEL 7 : kernel (RHSA-2017:1842) (Stack Clash) | Nessus | Red Hat Local Security Checks | high |
| 96000 | Ubuntu 16.10 : linux-raspi2 vulnerabilities (USN-3162-2) | Nessus | Ubuntu Local Security Checks | critical |
| 95999 | Ubuntu 16.10 : linux vulnerabilities (USN-3162-1) | Nessus | Ubuntu Local Security Checks | critical |
| 95998 | Ubuntu 16.04 LTS : linux-snapdragon vulnerabilities (USN-3161-4) | Nessus | Ubuntu Local Security Checks | critical |
| 95997 | Ubuntu 16.04 LTS : linux-raspi2 vulnerabilities (USN-3161-3) | Nessus | Ubuntu Local Security Checks | critical |
| 95996 | Ubuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-3161-2) | Nessus | Ubuntu Local Security Checks | critical |
| 95995 | Ubuntu 16.04 LTS : linux vulnerabilities (USN-3161-1) | Nessus | Ubuntu Local Security Checks | critical |
| 95994 | Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-3160-2) | Nessus | Ubuntu Local Security Checks | medium |
| 95993 | Ubuntu 14.04 LTS : linux vulnerabilities (USN-3160-1) | Nessus | Ubuntu Local Security Checks | medium |