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CVE-2011-1023

4.9 · MEDIUM

The Reliable Datagram Sockets (RDS) subsystem in the Linux kernel before 2.6.38 does not properly handle congestion map updates, which allows local users to cause a denial of service (BUG_ON and sy…

Published Jun 21, 2012linuxEPSS 0.48%

Overview

CVE-2011-1023 is a medium-severity vulnerability affecting linux linux_kernel. It was published on June 21, 2012 and has a CVSS 2.0 base score of 4.9 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.9, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The Reliable Datagram Sockets (RDS) subsystem in the Linux kernel before 2.6.38 does not properly handle congestion map updates, which allows local users to cause a denial of service (BUG_ON and system crash) via vectors involving (1) a loopback (aka loop) transmit operation or (2) an InfiniBand (aka ib) transmit operation.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
linuxlinux_kernel0Affected

References

Refftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6094628bfd94323fc1cea05ec2c6affd98c18f7fRefwww.openwall.com/lists/oss-security/2011/03/03/2Refbugzilla.redhat.com/show_bug.cgi?id=680345GitHubgithub.com/torvalds/linux/commit/6094628bfd94323fc1cea05ec2c6affd98c18f7fRefftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6094628bfd94323fc1cea05ec2c6affd98c18f7fRefwww.openwall.com/lists/oss-security/2011/03/03/2Refbugzilla.redhat.com/show_bug.cgi?id=680345GitHubgithub.com/torvalds/linux/commit/6094628bfd94323fc1cea05ec2c6affd98c18f7f

How CyberStrike helps

Frequently asked questions

What is CVE-2011-1023?

CVE-2011-1023 is a medium-severity vulnerability affecting linux linux_kernel. It was published on June 21, 2012 and has a CVSS 2.0 base score of 4.9 (MEDIUM).

How severe is CVE-2011-1023?

This vulnerability has a CVSS 2.0 base score of 4.9, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-1023?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-1023?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-1023 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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