CVE-2010-4165 Denial of service in n/a
Local attackers can cause a kernel denial of service via divide-by-zero or integer errors by setting small TCP MSS values.
- 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-2010-4165?
CVE-2010-4165 is a medium-severity denial of service vulnerability in Linux kernel, published on 20 Nov 2010. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The do_tcp_setsockopt function in net/ipv4/tcp.c in the Linux kernel before 2.6.37-rc2 does not properly restrict TCP_MAXSEG (aka MSS) values, which allows local users to cause a denial of service (OOPS) via a setsockopt call that specifies a small value, leading to a divide-by-zero error or incorrect use of a signed integer.
Weakness: CWE-369
Which versions are affected by CVE-2010-4165?
It affects 5 products.
Products include Linux kernel, Opensuse Opensuse, Suse Linux Enterprise Desktop, Suse Linux Enterprise Real Time Extension, Suse Linux Enterprise Server.
How do I fix CVE-2010-4165?
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-2010-4165 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2010-4165 exists.
Public exploit code: 2 Exploit-DB entries.
Other vulnerabilities in Linux kernel
Sources
Also known as GHSA-2x85-3pxc-c227.