CVE-2016-6213

MEDIUM

Linux Kernel < 4.8.15 - Denial of Service via MS_BIND Mount Namespace Exhaustion

Title source: llm
STIX 2.1

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 (7)

Core 7
Core References
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/07/13/8
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/91754
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1356471
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2077
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:1842

Scores

CVSS v3 4.7
EPSS 0.0037
EPSS Percentile 28.7%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-400
Status published
Products (1)
linux/linux_kernel < 4.8.15
Published Dec 28, 2016
Tracked Since Feb 18, 2026