CVE Database


Impact: Important
Public: 2010-11-01
Bugzilla: 651892: CVE-2010-4160 kernel: L2TP send buffer allocation size overflows


The MITRE CVE dictionary describes this issue as:

Multiple integer overflows in the (1) pppol2tp_sendmsg function in net/l2tp/l2tp_ppp.c, and the (2) l2tp_ip_sendmsg function in net/l2tp/l2tp_ip.c, in the PPPoL2TP and IPoL2TP implementations in the Linux kernel before allow local users to cause a denial of service (heap memory corruption and panic) or possibly gain privileges via a crafted sendto call.

Find out more about CVE-2010-4160 from the MITRE CVE dictionary and NIST NVD.


The Linux kernel as shipped with Red Hat Enterprise Linux 3, 4 and 5 did not
include L2TP functionality, and therefore are not affected by this
issue. This has been addressed in Red Hat Enterprise Linux 6 and Red Hat
Enterprise MRG via and

CVSS v2 metrics

Base Score: 6.9
Base Metrics: AV:L/AC:M/Au:N/C:C/I:C/A:C
Access Vector: Local
Access Complexity: Medium
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
MRG Grid for RHEL 5 Server (kernel-rt) RHSA-2011:0330 March 10, 2011
Red Hat Enterprise Linux version 6 (kernel) RHSA-2011:0007 January 11, 2011

External References


Red Hat would like to thank Dan Rosenberg for reporting this issue.

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.