CVE-2016-9191 Denial of service in n/a
Local users in a container can cause a system hang via mishandled cgroup drain operations, requiring kernel patches.
- 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-2016-9191?
CVE-2016-9191 is a medium-severity denial of service vulnerability in Linux kernel, published on 28 Nov 2016. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The cgroup offline implementation in the Linux kernel through 4.8.11 mishandles certain drain operations, which allows local users to cause a denial of service (system hang) by leveraging access to a container environment for executing a crafted application, as demonstrated by trinity.
Which versions are affected by CVE-2016-9191?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2016-9191?
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-2016-9191 being exploited?
There is no known exploitation of CVE-2016-9191 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2016-9191, GHSA-v46g-28c9-hw6q, UBUNTU-CVE-2016-9191.