CVE-2014-5207
fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing…
- 6.2MediumCVSS base score
- 0.88%Exploitation in 30 daysEPSS · top 41% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a "mount -o remount" command within a user namespace.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it. A reference of the record is tagged as an exploit.
Show the exploits2
Exploit-DB1 entry
- Linux Kernel < 3.16.1 - 'Remount FUSE' Local Privilege Escalation (Exploit-DB entry) (opens in a new tab)
EDB-ID 34923local, linuxpublished 9 Oct 2014Not verified
References tagged exploit1 reference
- 34923 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 5 days later
· 5 days later
Published
- 10 years later
· 10 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.2 | AV:L/AC:H/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 0.88% · top 41% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.2.
Affected products
n/a
- affected n/a
References
12
- 69216 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [oss-security] 20140812 CVE Request: ro bind mount bypass using user namespaces (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://github.com/torvalds/linux/commit/9566d6742852c527bf5af38af5cbb878dad75705 (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-2318-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 110055 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- 34923 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9566d6742852c527bf5af38af5cbb878dad75705 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=1129662 (opens in a new tab)x_refsource_CONFIRMx_transferred
- linux-kernel-cve20145207-sec-bypass(95266) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://packetstormsecurity.com/files/128595/Linux-Kernel-3.16.1-FUSE-Privilege-Escalation.html (opens in a new tab)x_refsource_MISCx_transferred
- [oss-security] 20140813 Re: CVE Request: ro bind mount bypass using user namespaces (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- USN-2317-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2014-5105 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2014-5207)Record last updated .