What is CVE-2005-3809?

CVE-2005-3809 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2005-3809 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2005-3809?

CVE-2005-3809 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is AV:N/AC:L/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2005-3809?

No patch is currently available for CVE-2005-3809. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2005-3809 actively exploited?

CVE-2005-3809 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2005-3809

High

The nfattr_to_tcp function in ip_conntrack_proto_tcp.c in ctnetlink in Linux kernel 2.6.14 up to 2.6.14.3 allows attackers to cause a denial of service (kernel oops) via an update message without private protocol information, which triggers a null dereference.

Package Linux Kernel

Published 2005-11-25

Last modified 2026-04-16

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

7.8

out of 10

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

None

Availability

Vector string

AV:N/AC:L/Au:N/C:N/I:N/A:C

References

The following references provide additional information about CVE-2005-3809 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Marc
http://marc.info/?l=linux-kernel&m=113269476105016&w=2
Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.14.3
Osvdb
http://www.osvdb.org/24114

Details

CVE ID CVE-2005-3809

Severity High

CVSS score 7.8 / 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-2005-3809?

CVE-2005-3809 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2005-3809 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2005-3809?

CVE-2005-3809 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 2.0). The vector string is AV:N/AC:L/Au:N/C:N/I:N/A:C.
Is there a patch available for CVE-2005-3809?

No patch is currently available for CVE-2005-3809. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2005-3809 actively exploited?

No — CVE-2005-3809 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.