CVE-2016-1576 Privilege escalation in n/a
Local attackers can gain privileges by exploiting overlayfs mount namespace restrictions to execute crafted setuid programs.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-1576?
CVE-2016-1576 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 2 May 2016. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The overlayfs implementation in the Linux kernel through 4.5.2 does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an overlayfs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.
Which versions are affected by CVE-2016-1576?
It affects 4 products.
Products include Canonical Ubuntu Core, Canonical Ubuntu Linux, Canonical Ubuntu Touch, Linux kernel.
How do I fix CVE-2016-1576?
Apply the vendor's patch.
Is CVE-2016-1576 being exploited?
There is no known exploitation of CVE-2016-1576 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2016-1576, GHSA-6774-jh98-f2hq, UBUNTU-CVE-2016-1576.