Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +15 | 2.6.32-220.7.1.el6 | RHSA-2012:0350 |
| RHEL 6 | rhev-hypervisor6 +1 | 6.2-20120320.0.el6_2 | RHSA-2012:0422 |
| RHEL 5 | kernel +12 | 2.6.18-274.18.1.el5 | RHSA-2012:0107 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 3.0.18-rt34.53.el6rt | RHSA-2012:0333 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Linux Kernel 2.6.36 IGMP - Remote Denial of Service EDB-18378 · dos · Jan 17, 2012
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 4
- RHSA-2012:0422 Red Hat Security Advisory: rhev-hypervisor6 security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:0350 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:0333 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:0107 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=654876
- https://github.com/torvalds/linux/commit/25c413ad0029ea86008234be28aee33456e53e5b
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.1
- https://github.com/torvalds/linux/commit/a8c1f65c79cbbb2f7da782d4c9d15639a9b94b27
- https://bugzilla.redhat.com/show_bug.cgi?id=772867
- [oss-security] 20120110 CVE-2012-0207 kernel: igmp: Avoid zero delay when receiving odd mixture of IGMP queries mailing-list
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a8c1f65c79cbbb2f7da782d4c9d15639a9b94b27