CVE-2014-5206 Privilege escalation in n/a

What is CVE-2014-5206?

CVE-2014-5206 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 18 Aug 2014. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-269

Which versions are affected by CVE-2014-5206?

It affects 2 products.

Products include Canonical Ubuntu Linux, Linux kernel.

How do I fix CVE-2014-5206?

Apply the vendor's patch.

Is CVE-2014-5206 being exploited?

There is no known exploitation of CVE-2014-5206 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2014-5206, GHSA-mm23-fxmx-2r5j, UBUNTU-CVE-2014-5206.