CVE-2009-2692 Null dereference in n/a
Local attackers can exploit uninitialized socket function pointers to trigger a null dereference and gain root privileges via memory mapping.
- 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-2009-2692?
CVE-2009-2692 is a high-severity vulnerability in Debian Debian Linux, published on 14 Aug 2009. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The Linux kernel 2.6.0 through 2.6.30.4, and 2.4.4 through 2.4.37.4, does not initialize all function pointers for socket operations in proto_ops structures, which allows local users to trigger a NULL pointer dereference and gain privileges by using mmap to map page zero, placing arbitrary code on this page, and then invoking an unavailable operation, as demonstrated by the sendpage operation (sock_sendpage function) on a PF_PPPOX socket.
Weakness: CWE-908
Which versions are affected by CVE-2009-2692?
It affects 8 products.
Products include Debian Debian Linux, Linux kernel, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus and 2 more.
How do I fix CVE-2009-2692?
Apply the vendor's patch.
Is CVE-2009-2692 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-2692 exists.
Public exploit code: 1 Metasploit module, 8 Exploit-DB entries and 1 proofs of concept on GitHub.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as CVE-2009-2962, DSA-1862-1, DSA-1864-1, GHSA-j86m-g62r-5g7r.