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. 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?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2005-3806 patch availability.

Is CVE-2005-3806 actively exploited?

CVE-2005-3806 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

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

28 total

Secunia
http://secunia.com/advisories/17917

Patch Vendor Advisory
Secunia
http://secunia.com/advisories/17918

Patch Vendor Advisory
Secunia
http://secunia.com/advisories/18203

Patch Vendor Advisory
Secunia
http://secunia.com/advisories/18510

Patch Vendor Advisory
Secunia
http://secunia.com/advisories/18562

Patch Vendor Advisory

Showing 5 of 28 references View all on NVD

Details

CVE ID CVE-2005-3806

Severity Medium

CVSS score 6.6 / 10

CVSS version 2.0

Published 2005-11-25

Modified 2026-04-16

KEV No

Patch Awaiting data

Package linux

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?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2005-3806 patch availability.
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.