CVE-2016-2854 Privilege escalation in n/a
Local attackers can gain privileges by exploiting improper POSIX ACL handling in the Linux kernel's aufs module within group-writable setgid directories.
- 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-2016-2854?
CVE-2016-2854 is a high-severity vulnerability in Linux kernel, 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 aufs module for the Linux kernel 3.x and 4.x 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-2016-2854?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2016-2854?
Apply the vendor's patch.
Is CVE-2016-2854 being exploited?
There is no known exploitation of CVE-2016-2854 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2016-2854, GHSA-mx43-7754-cfh2, UBUNTU-CVE-2016-2854.