Improper access control in Linux kernel - CVE-2014-9717
Published: May 2, 2016 / Updated: August 12, 2016
Vulnerability identifier: #VU92470
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2014-9717
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to read and manipulate data.
The vulnerability exists due to improper access control error within the mntput_no_expire(), umount_tree() and __detach_mounts() functions in fs/namespace.c. A local user can read and manipulate data.
How to mitigate CVE-2014-9717
Install update from vendor's repository.
Sources
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce07d891a0891d3c0d0c2d73d577490486b809e1
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2
- http://www.openwall.com/lists/oss-security/2015/04/17/4
- http://www.securityfocus.com/bid/74226
- http://www.spinics.net/lists/linux-containers/msg30786.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1226751
- https://github.com/torvalds/linux/commit/ce07d891a0891d3c0d0c2d73d577490486b809e1
- https://groups.google.com/forum/message/raw?msg=linux.kernel/HnegnbXk0Vs/RClojwJzAFEJ