CVE-2007-1861 Denial of service in n/a
Local attackers can cause a kernel panic and system crash via infinite recursion in the IPv4 FIB lookup function.
- 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-2007-1861?
CVE-2007-1861 is a medium-severity denial of service vulnerability in Linux kernel, published on 7 May 2007. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The nl_fib_lookup function in net/ipv4/fib_frontend.c in Linux Kernel before 2.6.20.8 allows attackers to cause a denial of service (kernel panic) via NETLINK_FIB_LOOKUP replies, which trigger infinite recursion and a stack overflow.
Weakness: CWE-399
Which versions are affected by CVE-2007-1861?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2007-1861?
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-2007-1861 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2007-1861 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Linux kernel
Sources
Also known as CVE-2007-2436, GHSA-w936-xhfj-xfpm.