Description
The br_multicast_add_group function in net/bridge/br_multicast.c in the Linux kernel before 2.6.38, when a certain Ethernet bridge configuration is used, allows local users to cause a denial of service (memory corruption and system crash) by sending IGMP packets to a local interface.
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 +13 | 2.6.32-71.24.1.el6 | RHSA-2011:0421 |
Advisories 1
- RHSA-2011:0421 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6b0d6a9b4296fa16a28d10d416db7a770fc03287
- [oss-security] 20110217 Re: CVE request -- kernel: deficiency in processing igmp host membership reports in br_multicast mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=678169
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38
- https://github.com/torvalds/linux/commit/6b0d6a9b4296fa16a28d10d416db7a770fc03287