CVE Database


Impact: Important
Public: 2009-08-24
CWE: CWE-476
Bugzilla: 518034: CVE-2009-2698 kernel: udp socket NULL ptr dereference


The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2009-2698 from the MITRE CVE dictionary and NIST NVD.


This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise MRG. Updates for Red Hat Enterprise Linux 3, 4 and 5 to correct this issue are available:

CVSS v2 metrics

Base Score: 7.2
Base Metrics: AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector: Local
Access Complexity: Low
Authentication: None
Confidentiality Impact: Complete
Integrity Impact: Complete
Availability Impact: Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
Red Hat Enterprise Linux ES EUS (v. 4.7) (kernel) RHSA-2009:1469 September 30, 2009
Red Hat Enterprise Linux EUS (v. 5.2 server) (kernel) RHSA-2009:1457 September 22, 2009
Red Hat Enterprise Linux version 3 (kernel) RHSA-2009:1233 August 27, 2009
Red Hat Enterprise Linux version 4 (kernel) RHSA-2009:1223 August 24, 2009
Red Hat Enterprise Linux version 5 (kernel) RHSA-2009:1222 August 24, 2009

External References


Red Hat would like to thank Tavis Ormandy and Julien Tinnes of the Google Security Team for responsibly reporting this flaw.

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.