CVE-2011-1770

High

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.

Package Linux Kernel
Published 2011-06-24
Last modified 2026-04-29
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

7.5

out of 10
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-191

CVE-2011-1770 is classified as CWE-191

See CWE-191 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2011-1770 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

4 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2011-1770?

    CVE-2011-1770 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10 . CVE-2011-1770 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2011-1770?

    CVE-2011-1770 has a CVSS score of 7.5 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2011-1770?

    No patch is currently available for CVE-2011-1770. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2011-1770 actively exploited?

    No — CVE-2011-1770 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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