CVE-2013-4129

Severity: medium (CVSS 4.7 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2013-07-29 · updated 2026-06-16
Weakness: CWE-20

Description

The bridge multicast implementation in the Linux kernel through 3.10.3 does not check whether a certain timer is armed before modifying the timeout value of that timer, which allows local users to cause a denial of service (BUG and system crash) via vectors involving the shutdown of a KVM virtual machine, related to net/bridge/br_mdb.c and net/bridge/br_multicast.c.

Affected products

Linux kernel: 3.0-rc1, 3.0-rc2, 3.0-rc3, 3.0-rc4, 3.0-rc5, 3.0-rc6 (+243)

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c7e8e8a8f7a70b343ca1e0f90a31e35ab2d16de1
http://www.openwall.com/lists/oss-security/2013/07/16/1
http://www.securityfocus.com/bid/61193
https://bugzilla.redhat.com/show_bug.cgi?id=984743
https://exchange.xforce.ibmcloud.com/vulnerabilities/85763
https://github.com/torvalds/linux/commit/c7e8e8a8f7a70b343ca1e0f90a31e35ab2d16de1
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c7e8e8a8f7a70b343ca1e0f90a31e35ab2d16de1
http://www.openwall.com/lists/oss-security/2013/07/16/1
http://www.securityfocus.com/bid/61193
https://bugzilla.redhat.com/show_bug.cgi?id=984743
https://exchange.xforce.ibmcloud.com/vulnerabilities/85763
https://github.com/torvalds/linux/commit/c7e8e8a8f7a70b343ca1e0f90a31e35ab2d16de1

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