Vulnerability in Linux Kernel
CVE-2014-9717
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (24.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html (vendor-advisory)
- github.com/torvalds/linux/commit/ce07d891a0891d3c0d0c2d73d577490486b809e1 (Vendor Advisory)
- www.openwall.com/lists/oss-security/2015/04/17/4 (mailing-list)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi
- groups.google.com/forum/message/raw (mailing-list)
- www.spinics.net/lists/linux-containers/msg30786.html (mailing-list)
- www.securityfocus.com/bid/74226 (vdb-entry)
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2
Frequently asked questions
- What is CVE-2014-9717?
- CVE-2014-9717 is a medium-severity vulnerability in Linux Kernel, classified under Improper Access Control. CVSS score: 6.1/10. Published 2016-05-02.
- How severe is CVE-2014-9717?
- Medium severity. CVSS v3 base score is 6.1 out of 10.