Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2011-3188

Published: May 24, 2012 | Modified: Apr 11, 2025
CVSS 3.x
9.1
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CVSS 2.x
6.4 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:P
RedHat/V2
5.8 MODERATE
AV:N/AC:M/Au:N/C:N/I:P/A:P
RedHat/V3
Ubuntu
MEDIUM
Vulnerability-free packages from our partners
root.io logo minimus.io logo echo.ai logo
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2011-3188
CWEhttps://cwe.mitre.org/data/definitions/NVD-Other.html

The (1) IPv4 and (2) IPv6 implementations in the Linux kernel before 3.1 use a modified MD4 algorithm to generate sequence numbers and Fragment Identification values, which makes it easier for remote attackers to cause a denial of service (disrupted networking) or hijack network sessions by predicting these values and sending crafted packets.

Affected Software

NameVendorStart VersionEnd Version
Linux_kernelLinux*3.1 (excluding)
Red Hat Enterprise Linux 5RedHatkernel-0:2.6.18-274.7.1.el5*
Red Hat Enterprise Linux 5.6 EUS - Server OnlyRedHatkernel-0:2.6.18-238.28.1.el5*
Red Hat Enterprise Linux 6RedHatkernel-0:2.6.32-131.21.1.el6*
Red Hat Enterprise MRG 2RedHatkernel-rt-0:2.6.33.9-rt31.79.el6rt*
LinuxUbuntuhardy*
LinuxUbuntulucid*
LinuxUbuntumaverick*
LinuxUbuntunatty*
LinuxUbuntuupstream*
Linux-ec2Ubuntulucid*
Linux-ec2Ubuntumaverick*
Linux-ec2Ubuntuupstream*
Linux-fsl-imx51Ubuntulucid*
Linux-fsl-imx51Ubuntuupstream*
Linux-lts-backport-maverickUbuntulucid*
Linux-lts-backport-maverickUbuntuupstream*
Linux-lts-backport-nattyUbuntulucid*
Linux-lts-backport-nattyUbuntuupstream*
Linux-lts-backport-oneiricUbuntuupstream*
Linux-mvl-doveUbuntulucid*
Linux-mvl-doveUbuntumaverick*
Linux-mvl-doveUbuntuupstream*
Linux-ti-omap4Ubuntumaverick*
Linux-ti-omap4Ubuntunatty*
Linux-ti-omap4Ubuntuupstream*

References

Aqua Security is the largest pure-play cloud native security company, providing customers the freedom to innovate and run their businesses with minimal friction. The Aqua Cloud Native Security Platform provides prevention, detection, and response automation across the entire application lifecycle to secure the build, secure cloud infrastructure and secure running workloads wherever they are deployed.
Copyright © 2026 Aqua Security Software Ltd.   Privacy Policy | Terms of Use