CVE-2011-1770
Integer underflow in the dccp_parse_options function (net/dccp/options.c) in the Linux kernel...
7.5 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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
4.36%Up 2.2 points since Feb 4, 2022
What each source reports
NVD Score used
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.
- Record
CVE-2011-1770- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 7.8 High
AV:N/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-191
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2011-1770- Updated
- 2026-11-02
EUVDEUVD-2011-1769 No score
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.
- Record
EUVD-2011-1769- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-qfgj-vxwq-r49v
Integer underflow in the dccp_parse_options function (net/dccp/options.c) in the Linux kernel...
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.
- Record
GHSA-qfgj-vxwq-r49v- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-191
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
linux-2.6Debian:6.0 From an advisory covering 36 CVEs |
before 2.6.32-34squeeze1, plus listed versions 2.6.32-302.6.32-30+m68k.52.6.32-312.6.32-31~bpo50+12.6.32-322.6.32-332.6.32-34 |
2.6.32-34squeeze1 |
kernelRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-bootwrapperRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-debugRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-debug-debuginfoRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-debug-develRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-debuginfoRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-debuginfo-common-i686Red Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-debuginfo-common-ppc64Red Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-debuginfo-common-s390xRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
Show 25 moreShow less
| Package | Affected | Fixed |
|---|---|---|
kernel-debuginfo-common-x86_64Red Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-develRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-docRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-firmwareRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-headersRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-kdumpRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-kdump-debuginfoRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-kdump-develRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
perfRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
perf-debuginfoRed Hat:enterprise_linux:6::server From an advisory covering 5 CVEs |
before 0:2.6.32-131.2.1.el6 | 0:2.6.32-131.2.1.el6 |
kernel-rtRed Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-debugRed Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-debug-debuginfoRed Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-debug-develRed Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-debuginfoRed Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-debuginfo-common-x86_64Red Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-develRed Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-docRed Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-firmwareRed Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-traceRed Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-trace-debuginfoRed Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-trace-develRed Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-vanillaRed Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-vanilla-debuginfoRed Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-vanilla-develRed Hat:enterprise_mrg:2:server:el6 From an advisory covering 33 CVEs |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-1770 is a high vulnerability (CVSS 7.5) in Linux Kernel, published May 23, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.36%, the 91st percentile. No source names a fixed version.
References
securitytracker.com/id?1025592
marc.info?l=linux-kernel&m=130468845209036&w=2
securityfocus.com/bid/47769
bugzilla.redhat.com/show_bug.cgi?id=703011
secunia.com/advisories/44932
Show 152 moreShow less
securityreason.com/securityalert/8286
lists.fedoraproject.org/pipermail/package-announce/2011-June/061236.html
kernel.org/pub/linux/kernel/v2.6/longterm/v2.6.33/ChangeLog-2.6.33.14
nvd.nist.gov/vuln/detail/CVE-2011-1770
access.redhat.com/errata/RHSA-2011:0836
github.com/advisories/GHSA-qfgj-vxwq-r49v
docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.1_Technical_Notes/kernel.html
security.access.redhat.com/data/csaf/v2/advisories/2011/rhsa-2011_0836.json
cve.org/CVERecord?id=CVE-2010-3858