CVE-2017-14106 Denial of service in n/a
Local attackers can crash the system via a divide-by-zero error in the TCP disconnect function, requiring kernel updates.
- 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-2017-14106?
CVE-2017-14106 is a medium-severity denial of service vulnerability in Linux kernel, published on 1 Sep 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The tcp_disconnect function in net/ipv4/tcp.c in the Linux kernel before 4.12 allows local users to cause a denial of service (__tcp_select_window divide-by-zero error and system crash) by triggering a disconnect within a certain tcp_recvmsg code path.
Weakness: CWE-369
Which versions are affected by CVE-2017-14106?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2017-14106?
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-2017-14106 being exploited?
There is no known exploitation of CVE-2017-14106 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2017-14106, GHSA-fwvw-9m43-mj3m, UBUNTU-CVE-2017-14106, USN-3443-3.