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CVE-2011-2213

4.9 · MEDIUM

The inet_diag_bc_audit function in net/ipv4/inet_diag.c in the Linux kernel before 2.6.39.3 does not properly audit INET_DIAG bytecode, which allows local users to cause a denial of service (kernel…

Published Aug 29, 2011linuxCWE-835EPSS 0.41%

Overview

CVE-2011-2213 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 29, 2011 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 inet_diag_bc_audit function in net/ipv4/inet_diag.c in the Linux kernel before 2.6.39.3 does not properly audit INET_DIAG bytecode, which allows local users to cause a denial of service (kernel infinite loop) via crafted INET_DIAG_REQ_BYTECODE instructions in a netlink message, as demonstrated by an INET_DIAG_BC_JMP instruction with a zero yes value, a different vulnerability than CVE-2010-3880.

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_kernel>= 0, < 2.6.39.3Affected

References

Refarticle.gmane.org/gmane.linux.network/197206Refarticle.gmane.org/gmane.linux.network/197208Refarticle.gmane.org/gmane.linux.network/197386Refarticle.gmane.org/gmane.linux.network/198809Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=eeb1497277d6b1a0a34ed36b97e18f2bd7d6de0dRefmarc.info/?l=bugtraq&m=139447903326211&w=2Refpatchwork.ozlabs.org/patch/100857/Refrhn.redhat.com/errata/RHSA-2011-0927.htmlRefwww.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.3Refwww.openwall.com/lists/oss-security/2011/06/20/1

How CyberStrike helps

Frequently asked questions

What is CVE-2011-2213?

CVE-2011-2213 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 29, 2011 and has a CVSS 2.0 base score of 4.9 (MEDIUM).

How severe is CVE-2011-2213?

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-2011-2213?

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-2011-2213?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-2213 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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