CVE-2012-0207

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 20.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2012-05-17 · updated 2026-06-16
Weakness: CWE-369

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.

Affected products

Linux kernel: before 3.0.17; from 3.1 before 3.1.9; from 3.2 before 3.2.1 — fixed in 3.0.17, 3.1.9, 3.2.1
RedHat Enterprise Linux Eus: 5.6

How to fix

Upgrade to a fixed version: Linux kernel 3.0.17, 3.1.9, 3.2.1. Check the vendor advisory for mitigations.

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=654876
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a8c1f65c79cbbb2f7da782d4c9d15639a9b94b27
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.1
http://www.openwall.com/lists/oss-security/2012/01/10/5
https://bugzilla.redhat.com/show_bug.cgi?id=772867
https://github.com/torvalds/linux/commit/25c413ad0029ea86008234be28aee33456e53e5b
https://github.com/torvalds/linux/commit/a8c1f65c79cbbb2f7da782d4c9d15639a9b94b27
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=654876
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a8c1f65c79cbbb2f7da782d4c9d15639a9b94b27
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.1
http://www.openwall.com/lists/oss-security/2012/01/10/5
https://bugzilla.redhat.com/show_bug.cgi?id=772867

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