CVE-2011-2699

Name: CVE-2011-2699
Creator: NVD / NIST
Published: 2012-05-24T23:55:01.963+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 5.57%

Last modified Jun 16, 2026

CVE-2011-2699 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The IPv6 implementation in the Linux kernel before 3.1 does not generate Fragment Identification values separately for each destination, which makes it easier for remote attackers to cause a denial of service (disrupted networking) by predicting these values and sending crafted packets.. EPSS estimates a 5.57% chance of exploitation in the next 30 days.

Description

The IPv6 implementation in the Linux kernel before 3.1 does not generate Fragment Identification values separately for each destination, which makes it easier for remote attackers to cause a denial of service (disrupted networking) by predicting these values and sending crafted packets.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

5.57%

91.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 3.1
Redhat	Enterprise Linux	4.0
Redhat	Enterprise Mrg	2.0

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=87c48fa3b4630905f98268dde838ee43626a060c
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1Mailing List, Patch, Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150Broken Link
http://www.openwall.com/lists/oss-security/2011/07/20/5Mailing List, Third Party Advisory
http://www.securitytracker.com/id?1027274Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=723429Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/87c48fa3b4630905f98268dde838ee43626a060cPatch, Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=87c48fa3b4630905f98268dde838ee43626a060c
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1Mailing List, Patch, Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150Broken Link
http://www.openwall.com/lists/oss-security/2011/07/20/5Mailing List, Third Party Advisory
http://www.securitytracker.com/id?1027274Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=723429Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/87c48fa3b4630905f98268dde838ee43626a060cPatch, Third Party Advisory

Timeline

Published: May 24, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-2699?

How severe is CVE-2011-2699?

CVE-2011-2699 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 5.57% probability of exploitation in the next 30 days.

How do I fix CVE-2011-2699?

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-2011-2699?

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

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Source: NVD / NIST