CVE-2016-1575 Privilege escalation in n/a
Local attackers can gain privileges by exploiting improper POSIX ACL handling in the Linux kernel overlayfs implementation.
- 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-2016-1575?
CVE-2016-1575 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 maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory.
Weakness: CWE-269
Which versions are affected by CVE-2016-1575?
It affects 4 products.
Products include Canonical Ubuntu Core, Canonical Ubuntu Linux, Canonical Ubuntu Touch, Linux kernel.
How do I fix CVE-2016-1575?
Apply the vendor's patch.
Is CVE-2016-1575 being exploited?
There is no known exploitation of CVE-2016-1575 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-2016-1575, GHSA-mgq6-h57w-6g82, UBUNTU-CVE-2016-1575.