Public Date:
702303: CVE-2011-1767 CVE-2011-1768 kernel: netns vs proto registration ordering

The MITRE CVE dictionary describes this issue as:

The tunnels implementation in the Linux kernel before 2.6.34, when tunnel functionality is configured as a module, allows remote attackers to cause a denial of service (OOPS) by sending a packet during module loading.

Find out more about CVE-2011-1768 from the MITRE CVE dictionary dictionary and NIST NVD.


The Linux kernel as shipped with Red Hat Enterprise Linux 4, and 5 did not provide support for Network Namespace, 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 5.4
Base Metrics AV:N/AC:H/Au:N/C:N/I:N/A:C
Access Vector Network
Access Complexity High
Authentication None
Confidentiality Impact None
Integrity Impact None
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 6 (kernel) RHSA-2011:0928 2011-07-12
Red Hat MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2011:1253 2011-09-12

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 1 realtime-kernel Will not fix
Last Modified

CVE description copyright © 2017, The MITRE Corporation