Public Date:
2012-A-0148, 2012-A-0153
772867: CVE-2012-0207 kernel: igmp: Avoid zero delay when receiving odd mixture of IGMP queries

The MITRE CVE dictionary describes this issue as:

The igmp_heard_query function in net/ipv4/igmp.c in the Linux kernel before 3.2.1 allows remote attackers to cause a denial of service (divide-by-zero error and panic) via IGMP packets.

Find out more about CVE-2012-0207 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4 as it did not backport the upstream commit 5b7c8406.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 6.1
Base Metrics AV:A/AC:L/Au:N/C:N/I:N/A:C
Access Vector Adjacent Network
Access Complexity Low
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 Virtualization Hypervisor 5 (rhev-hypervisor5) RHSA-2012:0168 2012-02-21
RHEV Hypervisor for RHEL-6 (rhev-hypervisor6) RHSA-2012:0422 2012-03-26
Red Hat Enterprise Linux version 5 (kernel) RHSA-2012:0107 2012-02-09
Red Hat Enterprise Linux version 6 (kernel) RHSA-2012:0350 2012-03-06
MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2012:0333 2012-02-23

Affected Packages State

Platform Package State
Red Hat Enterprise Linux EUS (v. 5.6 server) kernel Affected
Red Hat Enterprise Linux 4 kernel Not affected


Red Hat would like to thank Simon McVittie for reporting this issue.