CVE-2012-6638 Denial of service in n/a
Remote attackers can cause kernel resource consumption and denial of service by flooding SYN+FIN TCP packets to the Linux kernel.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2012-6638?
CVE-2012-6638 is a high-severity denial of service vulnerability in Linux kernel, published on 15 Feb 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The tcp_rcv_state_process function in net/ipv4/tcp_input.c in the Linux kernel before 3.2.24 allows remote attackers to cause a denial of service (kernel resource consumption) via a flood of SYN+FIN TCP packets, a different vulnerability than CVE-2012-2663.
Weakness: CWE-400
Which versions are affected by CVE-2012-6638?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2012-6638?
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-2012-6638 being exploited?
There is no known exploitation of CVE-2012-6638 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2012-6638, GHSA-wq3v-5978-56ch.