FKIE_CVE-2014-5206

Vulnerability from fkie_nvd - Published: 2014-08-18 11:15 - Updated: 2026-06-17 00:11
Severity
Summary
The 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.
References
cve@mitre.orghttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a6138db815df5ee542d848318e5dae681590fccd
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2014/08/13/4Mailing List, Third Party Advisory
cve@mitre.orghttp://www.securityfocus.com/bid/69214Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.ubuntu.com/usn/USN-2317-1Third Party Advisory
cve@mitre.orghttp://www.ubuntu.com/usn/USN-2318-1Third Party Advisory
cve@mitre.orghttps://bugzilla.redhat.com/show_bug.cgi?id=1129662Issue Tracking, Patch, Third Party Advisory
cve@mitre.orghttps://github.com/torvalds/linux/commit/a6138db815df5ee542d848318e5dae681590fccdPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a6138db815df5ee542d848318e5dae681590fccd
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2014/08/13/4Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/69214Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2317-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2318-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1129662Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/a6138db815df5ee542d848318e5dae681590fccdPatch, Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
canonical ubuntu_linux 12.04
canonical ubuntu_linux 14.04
To clipboard 

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          "vendor": "n/a",
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  "cveTags": [],
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      "value": "The 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."
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    }
  ],
  "id": "CVE-2014-5206",
  "lastModified": "2026-06-17T00:11:12.880",
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        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
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          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
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          "integrityImpact": "COMPLETE",
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          "version": "2.0"
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}



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