CVE-2011-4326

Name: CVE-2011-4326
Creator: NVD / NIST
Published: 2012-05-17T11:00:33.837+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.21%

Last modified Jun 16, 2026

CVE-2011-4326 is a vulnerability of currently unknown severity. The udp6_ufo_fragment function in net/ipv6/udp.c in the Linux kernel before 2.6.39, when a certain UDP Fragmentation Offload (UFO) configuration is enabled, allows remote attackers to cause a denial of service (system crash) by sending fragmented IPv6 UDP packets to a bridge device.. EPSS estimates a 3.21% chance of exploitation in the next 30 days.

Description

The udp6_ufo_fragment function in net/ipv6/udp.c in the Linux kernel before 2.6.39, when a certain UDP Fragmentation Offload (UFO) configuration is enabled, allows remote attackers to cause a denial of service (system crash) by sending fragmented IPv6 UDP packets to a bridge device.

Metrics

EPSS Probability

3.21%

86.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-399

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 2.6.39
Avaya	96x1 Ip Deskphone Firmware	>= 6.0.0, <= 6.6.0

References

http://downloads.avaya.com/css/P8/documents/100156038Third Party Advisory
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39Broken Link
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a9cf73ea7ff78f52662c8658d93c226effbbedde
http://www.openwall.com/lists/oss-security/2011/11/21/10Mailing List
http://www.securityfocus.com/bid/50751Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=682066Exploit, Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=755584Issue Tracking, Third Party Advisory
https://github.com/torvalds/linux/commit/a9cf73ea7ff78f52662c8658d93c226effbbeddePatch, Third Party Advisory
http://downloads.avaya.com/css/P8/documents/100156038Third Party Advisory
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39Broken Link
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a9cf73ea7ff78f52662c8658d93c226effbbedde
http://www.openwall.com/lists/oss-security/2011/11/21/10Mailing List
http://www.securityfocus.com/bid/50751Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=682066Exploit, Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=755584Issue Tracking, Third Party Advisory
https://github.com/torvalds/linux/commit/a9cf73ea7ff78f52662c8658d93c226effbbeddePatch, Third Party Advisory

Timeline

Published: May 17, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-4326?

How severe is CVE-2011-4326?

Severity scoring for CVE-2011-4326 is pending analysis. The EPSS model estimates a 3.21% probability of exploitation in the next 30 days.

How do I fix CVE-2011-4326?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-4326?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST