CVE-2011-2534

Name: CVE-2011-2534
Creator: NVD / NIST
Published: 2011-06-22T23:55:01.433+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.46%

Last modified Jun 16, 2026

CVE-2011-2534 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Buffer overflow in the clusterip_proc_write function in net/ipv4/netfilter/ipt_CLUSTERIP.c in the Linux kernel before 2.6.39 might allow local users to cause a denial of service or have unspecified other impact via a crafted write operation, related to string data that lacks a terminating '\0' character.. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

Buffer overflow in the clusterip_proc_write function in net/ipv4/netfilter/ipt_CLUSTERIP.c in the Linux kernel before 2.6.39 might allow local users to cause a denial of service or have unspecified other impact via a crafted write operation, related to string data that lacks a terminating '\0' character.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.46%

36.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 2.6.39

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=961ed183a9fd080cf306c659b8736007e44065a5
http://marc.info/?l=netfilter&m=129978077509888&w=2Patch, Third Party Advisory
http://marc.info/?l=netfilter-devel&m=130036157327564&w=2Patch, Third Party Advisory
http://securityreason.com/securityalert/8284Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39Release Notes, Vendor Advisory
http://www.openwall.com/lists/oss-security/2011/03/18/15Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2011/03/21/1Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2011/03/21/4Mailing List, Patch, Third Party Advisory
http://www.securityfocus.com/bid/46921Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=689337Issue Tracking, Patch, Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=961ed183a9fd080cf306c659b8736007e44065a5
http://marc.info/?l=netfilter&m=129978077509888&w=2Patch, Third Party Advisory
http://marc.info/?l=netfilter-devel&m=130036157327564&w=2Patch, Third Party Advisory
http://securityreason.com/securityalert/8284Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39Release Notes, Vendor Advisory
http://www.openwall.com/lists/oss-security/2011/03/18/15Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2011/03/21/1Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2011/03/21/4Mailing List, Patch, Third Party Advisory
http://www.securityfocus.com/bid/46921Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=689337Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Jun 22, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-2534?

How severe is CVE-2011-2534?

CVE-2011-2534 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2011-2534?

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-2011-2534?

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

Scan your code now

Source: NVD / NIST