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CVE-2011-1770

25
FAUCET Score

CVE-2011-1770 describes an integer underflow vulnerability in the Linux kernel's DCCP option parsing, affecting Fedora and other Linux kernel versions before 2.6.33.14. This flaw allows remote attackers to trigger a denial of service by sending a specially crafted DCCP packet, leading to a buffer over-read. Rated with a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity and no user interaction required, potentially causing system unavailability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.6.33.14CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
14CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:14:*:*:*:*:*:*:*
15CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:15:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.36%
Probability of exploitation in next 30 days
EPSS Percentile
90.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0436 is in the 83rd percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

fedorapatch availablevia nvd_reference
View patch
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-131.2.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-0:2.6.33.9-rt31.75.el6rt
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise MRG 1Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2011-1770Important

kernel: dccp: handle invalid feature options length

May 6, 2011

References

lists.fedoraproject.org / pipermail/package-announce/2011-June/061236.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2011-June/061366.html
PatchThird Party Advisory
marc.info
PatchThird Party Advisory
marc.info
PatchThird Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
secunia.com / advisories/44932
Third Party AdvisoryVendor Advisory
securityreason.com / securityalert/8286
Third Party Advisory
kernel.org / pub/linux/kernel/v2.6/longterm/v2.6.33/ChangeLog-2.6.33.14
Release NotesVendor Advisory
securityfocus.com / bid/47769
Third Party AdvisoryVDB Entry
securitytracker.com / id
Third Party AdvisoryVDB Entry