CVE-2014-5206

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Summary

CVECVE-2014-5206
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2014-08-18 11:15:27 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionThe do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a "mount -o remount" command within a user namespace.

Risk And Classification

Primary CVSS: v2.0 7.2 from [email protected]

AV:L/AC:L/Au:N/C:C/I:C/A:C

Problem Types: CWE-269 | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:L/AC:L/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
USN-2317-1: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
Linux Kernel CVE-2014-5206 Local Security Bypass Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Bug 1129662 – CVE-2014-5206 CVE-2014-5207 kernel: mount flags handling during remount af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
mnt: Only change user settable mount flags in remount · torvalds/linux@a6138db · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Third Party Advisory
git.kernel.org af854a3a-2127-422b-91ae-364da2661108 git.kernel.org
USN-2318-1: Linux kernel vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
oss-security - Re: CVE Request: ro bind mount bypass using user namespaces af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree MITRE git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 671064 EulerOS Security Update for kernel (EulerOS-SA-2019-2599)
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