CVE-2011-1093

Name: CVE-2011-1093
Creator: NVD / NIST
Published: 2011-07-18T22:55:00.97+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.41%

Last modified Jun 16, 2026

CVE-2011-1093 is a vulnerability of currently unknown severity. The dccp_rcv_state_process function in net/dccp/input.c in the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel before 2.6.38 does not properly handle packets for a CLOSED endpoint, which allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by sending a DCCP-Close packet followed by a DCCP-Reset packet.. EPSS estimates a 3.41% chance of exploitation in the next 30 days.

Description

The dccp_rcv_state_process function in net/dccp/input.c in the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel before 2.6.38 does not properly handle packets for a CLOSED endpoint, which allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by sending a DCCP-Close packet followed by a DCCP-Reset packet.

Metrics

EPSS Probability

3.41%

87.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 2.6.38
Redhat	Enterprise Linux Aus	5.6
Redhat	Enterprise Linux Desktop	5.0
Redhat	Enterprise Linux Eus	5.6
Redhat	Enterprise Linux Server	5.0
Redhat	Enterprise Linux Workstation	5.0

References

http://downloads.avaya.com/css/P8/documents/100145416Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=720dc34bbbe9493c7bd48b2243058b4e447a929d
http://openwall.com/lists/oss-security/2011/03/08/19Mailing List, Patch, Third Party Advisory
http://openwall.com/lists/oss-security/2011/03/08/4Mailing List, Patch, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2011-0833.htmlThird Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38Broken Link
http://www.securityfocus.com/bid/46793Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=682954Issue Tracking, Patch, Third Party Advisory
http://downloads.avaya.com/css/P8/documents/100145416Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=720dc34bbbe9493c7bd48b2243058b4e447a929d
http://openwall.com/lists/oss-security/2011/03/08/19Mailing List, Patch, Third Party Advisory
http://openwall.com/lists/oss-security/2011/03/08/4Mailing List, Patch, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2011-0833.htmlThird Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38Broken Link
http://www.securityfocus.com/bid/46793Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=682954Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Jul 18, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-1093?

How severe is CVE-2011-1093?

Severity scoring for CVE-2011-1093 is pending analysis. The EPSS model estimates a 3.41% probability of exploitation in the next 30 days.

How do I fix CVE-2011-1093?

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-2011-1093?

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

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Source: NVD / NIST