CVE-2016-2070 Denial of service in n/a
Remote attackers can crash the Linux kernel via crafted TCP traffic due to a divide-by-zero error in TCP congestion control.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-2070?
CVE-2016-2070 is a high-severity denial of service vulnerability in Linux kernel, published on 2 May 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The tcp_cwnd_reduction function in net/ipv4/tcp_input.c in the Linux kernel before 4.3.5 allows remote attackers to cause a denial of service (divide-by-zero error and system crash) via crafted TCP traffic.
Weakness: CWE-189
Which versions are affected by CVE-2016-2070?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2016-2070?
Upgrade to a fixed version.
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-2016-2070 being exploited?
There is no known exploitation of CVE-2016-2070 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2016-2070, GHSA-fq7q-rch4-j8hq.