CVE-2011-1770

Name: CVE-2011-1770
Creator: NVD / NIST
Published: 2011-06-24T20:55:03.53+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 4.36%

Last modified Jun 16, 2026

CVE-2011-1770 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Integer underflow in the dccp_parse_options function (net/dccp/options.c) in the Linux kernel before 2.6.33.14 allows remote attackers to cause a denial of service via a Datagram Congestion Control Protocol (DCCP) packet with an invalid feature options length, which triggers a buffer over-read.. EPSS estimates a 4.36% chance of exploitation in the next 30 days.

Description

Integer underflow in the dccp_parse_options function (net/dccp/options.c) in the Linux kernel before 2.6.33.14 allows remote attackers to cause a denial of service via a Datagram Congestion Control Protocol (DCCP) packet with an invalid feature options length, which triggers a buffer over-read.

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

4.36%

90.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-191

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 2.6.33.14
Fedoraproject	Fedora	14
Fedoraproject	Fedora	15

References

http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061236.htmlThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061366.htmlPatch, Third Party Advisory
http://marc.info/?l=linux-kernel&m=130468845209036&w=2Patch, Third Party Advisory
http://marc.info/?l=linux-kernel&m=130469305815140&w=2Patch, Third Party Advisory
http://secunia.com/advisories/44932Third Party Advisory, Vendor Advisory
http://securityreason.com/securityalert/8286Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/longterm/v2.6.33/ChangeLog-2.6.33.14Release Notes, Vendor Advisory
http://www.securityfocus.com/bid/47769Third Party Advisory, VDB Entry
http://www.securitytracker.com/id?1025592Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=703011Issue Tracking, Patch, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061236.htmlThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061366.htmlPatch, Third Party Advisory
http://marc.info/?l=linux-kernel&m=130468845209036&w=2Patch, Third Party Advisory
http://marc.info/?l=linux-kernel&m=130469305815140&w=2Patch, Third Party Advisory
http://secunia.com/advisories/44932Third Party Advisory, Vendor Advisory
http://securityreason.com/securityalert/8286Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/longterm/v2.6.33/ChangeLog-2.6.33.14Release Notes, Vendor Advisory
http://www.securityfocus.com/bid/47769Third Party Advisory, VDB Entry
http://www.securitytracker.com/id?1025592Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=703011Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Jun 24, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-1770?

How severe is CVE-2011-1770?

CVE-2011-1770 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.36% probability of exploitation in the next 30 days.

How do I fix CVE-2011-1770?

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-2011-1770?

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

Scan your code now

Source: NVD / NIST