CVE-2014-9717

6.1 MEDIUM
Published: May 02, 2016 Modified: May 06, 2026
View on NVD

Description

fs/namespace.c in the Linux kernel before 4.0.2 processes MNT_DETACH umount2 system calls without verifying that the MNT_LOCKED flag is unset, which allows local users to bypass intended access restrictions and navigate to filesystem locations beneath a mount by calling umount2 within a user namespace.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce07d891a0891d3c0d0c2d73d577490486b809e1
Source: cve@mitre.org
Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html
Source: cve@mitre.org
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html
Source: cve@mitre.org
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
Source: cve@mitre.org
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2
Source: cve@mitre.org
http://www.openwall.com/lists/oss-security/2015/04/17/4
Source: cve@mitre.org
http://www.securityfocus.com/bid/74226
Source: cve@mitre.org
http://www.spinics.net/lists/linux-containers/msg30786.html
Source: cve@mitre.org
https://bugzilla.redhat.com/show_bug.cgi?id=1226751
Source: cve@mitre.org
https://github.com/torvalds/linux/commit/ce07d891a0891d3c0d0c2d73d577490486b809e1
Source: cve@mitre.org
Vendor Advisory
https://groups.google.com/forum/message/raw?msg=linux.kernel/HnegnbXk0Vs/RClojwJzAFEJ
Source: cve@mitre.org
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce07d891a0891d3c0d0c2d73d577490486b809e1
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2015/04/17/4
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securityfocus.com/bid/74226
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.spinics.net/lists/linux-containers/msg30786.html
Source: af854a3a-2127-422b-91ae-364da2661108
https://bugzilla.redhat.com/show_bug.cgi?id=1226751
Source: af854a3a-2127-422b-91ae-364da2661108
https://github.com/torvalds/linux/commit/ce07d891a0891d3c0d0c2d73d577490486b809e1
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://groups.google.com/forum/message/raw?msg=linux.kernel/HnegnbXk0Vs/RClojwJzAFEJ
Source: af854a3a-2127-422b-91ae-364da2661108

22 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.1 / 10.0
EPSS (Exploit Probability)
0.0%
12th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-284

Affected Vendors

linux

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