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CVE-2006-5173

2.1 · LOW

Linux kernel does not properly save or restore EFLAGS during a context switch, or reset the flags when creating new threads, which allows local users to cause a denial of service (process crash), a…

Published Oct 17, 2006linuxEPSS 0.43%

Overview

CVE-2006-5173 is a low-severity vulnerability affecting linux linux_kernel. It was published on October 17, 2006 and has a CVSS 2.0 base score of 2.1 (LOW).

This vulnerability has a CVSS 2.0 base score of 2.1, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Linux kernel does not properly save or restore EFLAGS during a context switch, or reset the flags when creating new threads, which allows local users to cause a denial of service (process crash), as demonstrated using a process that sets the Alignment Check flag (EFLAGS 0x40000), which triggers a SIGBUS in other processes that have an unaligned access.

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_kernel2.4.0Affected

References

Refkernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=47a5c6fa0e204a2b63309c648bb2fde36836c826Refsecunia.com/advisories/23361Refsecunia.com/advisories/23384Refsecunia.com/advisories/23474Refsecunia.com/advisories/23593Refsecunia.com/advisories/25691Refwww.mandriva.com/security/advisories?name=MDKSA-2007:002Refwww.novell.com/linux/security/advisories/2006_79_kernel.htmlRefwww.securityfocus.com/archive/1/471457Refwww.securityfocus.com/bid/21851

How CyberStrike helps

Frequently asked questions

What is CVE-2006-5173?

CVE-2006-5173 is a low-severity vulnerability affecting linux linux_kernel. It was published on October 17, 2006 and has a CVSS 2.0 base score of 2.1 (LOW).

How severe is CVE-2006-5173?

This vulnerability has a CVSS 2.0 base score of 2.1, rated LOW. 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-2006-5173?

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-2006-5173?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2006-5173 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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