CVE-2014-5207 EXPLOIT
6.2
MEDIUM · CVSS 2.0 · EPSS 0.9% (pctl 58)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 6.2 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:L/AC:H/Au:N/C:C/I:C/A:C |
| EPSS | 0.88% — more likely to be exploited than 58% of all CVEs |
| Weakness | CWE-269 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2014-08-18 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| canonical | ubuntu linux |
| linux | linux kernel |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Linux Kernel < 3.16.1 - 'Remount FUSE' Local Privilege Escalation | 2014-10-09 |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9566d6742852c527bf5af38af5cbb878dad75705
- http://osvdb.org/show/osvdb/110055
- http://packetstormsecurity.com/files/128595/Linux-Kernel-3.16.1-FUSE-Privilege-Escalation.html
- http://seclists.org/oss-sec/2014/q3/352
- http://www.exploit-db.com/exploits/34923
- http://www.openwall.com/lists/oss-security/2014/08/13/4
- http://www.securityfocus.com/bid/69216
- http://www.ubuntu.com/usn/USN-2317-1
- http://www.ubuntu.com/usn/USN-2318-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1129662
- https://exchange.xforce.ibmcloud.com/vulnerabilities/95266
- https://github.com/torvalds/linux/commit/9566d6742852c527bf5af38af5cbb878dad75705
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9566d6742852c527bf5af38af5cbb878dad75705
- http://osvdb.org/show/osvdb/110055
- http://packetstormsecurity.com/files/128595/Linux-Kernel-3.16.1-FUSE-Privilege-Escalation.html
- http://seclists.org/oss-sec/2014/q3/352
- http://www.exploit-db.com/exploits/34923
- http://www.openwall.com/lists/oss-security/2014/08/13/4
- http://www.securityfocus.com/bid/69216
- http://www.ubuntu.com/usn/USN-2317-1
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