CVE-2014-7970 Denial of service in n/a

What is CVE-2014-7970?

CVE-2014-7970 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 13 Oct 2014. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The pivot_root implementation in fs/namespace.c in the Linux kernel through 3.17 does not properly interact with certain locations of a chroot directory, which allows local users to cause a denial of service (mount-tree loop) via . (dot) values in both arguments to the pivot_root system call.

Weakness: CWE-400

Which versions are affected by CVE-2014-7970?

It affects 3 products.

Products include Canonical Ubuntu Linux, Linux kernel, Novell Suse Linux Enterprise Server.

How do I fix CVE-2014-7970?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2014-7970 being exploited?

There is no known exploitation of CVE-2014-7970 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-2014-7970, GHSA-7p5j-7j45-6mrj, UBUNTU-CVE-2014-7970.