CVE-2005-3806

Medium

The IPv6 flow label handling code (ip6_flowlabel.c) in Linux kernels 2.4 up to 2.4.32 and 2.6 before 2.6.14 modifies the wrong variable in certain circumstances, which allows local users to corrupt kernel memory or cause a denial of service (crash) by triggering a free of non-allocated memory.

Package Linux Kernel
Published 2005-11-25
Last modified 2026-04-16
CVSS version 2.0
Patch available
Awaiting data

CVSS 2.0 score

6.6

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
User Interaction
Scope
Confidentiality
Low
Integrity
Availability
Vector string
AV:L/AC:L/Au:N/C:N/I:C/A:C

Weakness type

CWE-399

CVE-2005-3806 is classified as CWE-399

See CWE-399 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2005-3806 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

12 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2005-3806?

    CVE-2005-3806 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.6 out of 10 . CVE-2005-3806 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2005-3806?

    CVE-2005-3806 has a CVSS score of 6.6 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:N/I:C/A:C .

  • Is there a patch available for CVE-2005-3806?

    No patch is currently available for CVE-2005-3806. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2005-3806 actively exploited?

    No — CVE-2005-3806 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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