CVE-2006-5173

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), 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.

Package Linux Kernel
Published 2006-10-17
Last modified 2026-04-23
CVSS version 2.0
Patch available
Awaiting data

CVSS 2.0 score

2.1

out of 10
Low
Attack Vector
Local
Attack Complexity
Low
Privileges Required
User Interaction
Scope
Confidentiality
Low
Integrity
None
Availability
Vector string
AV:L/AC:L/Au:N/C:N/I:N/A:P

References

The following references provide additional information about CVE-2006-5173 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2006-5173?

    CVE-2006-5173 is a Low severity Linux kernel vulnerability with a CVSS score of 2.1 out of 10 . CVE-2006-5173 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2006-5173?

    CVE-2006-5173 has a CVSS score of 2.1 out of 10, rated Low severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:P .

  • Is there a patch available for CVE-2006-5173?

    No patch is currently available for CVE-2006-5173. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2006-5173 actively exploited?

    No — CVE-2006-5173 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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