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CVE-2016-6213

Date: December 28, 2016

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.

Language: C

Severity Score

Related Resources (11)

https://access.redhat.com/errata/RHSA-2017:1842
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d29216842a85c7970c536108e093963f02714498
https://nvd.nist.gov/vuln/detail/CVE-2016-6213
http://www.securityfocus.com/bid/91754
https://github.com/torvalds/linux/commit/d29216842a85c7970c536108e093963f02714498
https://access.redhat.com/security/cve/CVE-2016-6213
https://access.redhat.com/errata/RHSA-2017:2077
https://bugzilla.redhat.com/show_bug.cgi?id=1356471
http://www.openwall.com/lists/oss-security/2016/07/13/8
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-6213
https://www.mend.io/vulnerability-database/CVE-2016-6213

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption

CWE-400

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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