CVE-2009-2698 Null dereference in n/a

What is CVE-2009-2698?

CVE-2009-2698 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 27 Aug 2009. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The udp_sendmsg function in the UDP implementation in (1) net/ipv4/udp.c and (2) net/ipv6/udp.c in the Linux kernel before 2.6.19 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving the MSG_MORE flag and a UDP socket.

Weakness: CWE-476

Which versions are affected by CVE-2009-2698?

It affects 12 products.

Products include Canonical Ubuntu Linux, Fedoraproject Fedora, Linux kernel, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Server and 6 more.

How do I fix CVE-2009-2698?

Apply the vendor's patch.

Is CVE-2009-2698 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-2698 exists.

Public exploit code: 3 Exploit-DB entries and 1 proofs of concept on GitHub.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-x9j9-wxm6-8cvm.