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CVE-2014-5206

N/A
Published: August 18, 2014 at 10:00 AM UTC
Updated: June 17, 2026 at 12:11 AM UTC
2 products affected across 2 vendorsLinux KernelUbuntu Linux

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Severity
N/A
Exploit prediction
EPSS 0.4%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ubuntu Linux· Canonicalrubygems
95%
12.0414.04
Linux Kernel· Linux
95%
3.11 ≤ v < 3.12.273.13 ≤ v < 3.14.193.15 ≤ v < 3.16.33.8 ≤ v < 3.10.55
Affected range stops below 3.10.55, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.12.27, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.14.19, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.16.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (7)

x_refsource_CONFIRM
Source: [email protected]
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a6138db815df5ee542d848318e5dae681590fccd
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2014/08/13/4
VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/69214
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
http://www.ubuntu.com/usn/USN-2317-1
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
http://www.ubuntu.com/usn/USN-2318-1
x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1129662
x_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://github.com/torvalds/linux/commit/a6138db815df5ee542d848318e5dae681590fccd

CVSS

7.2HIGH[email protected]
Confidentiality
COMPLETE
Integrity
COMPLETE
Availability
COMPLETE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-269

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