What is CVE-2009-3726?

CVE-2009-3726 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2009-3726 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2009-3726?

CVE-2009-3726 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-2009-3726?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2009-3726 patch availability.

Is CVE-2009-3726 actively exploited?

CVE-2009-3726 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2009-3726

High

The nfs4_proc_lock function in fs/nfs/nfs4proc.c in the NFSv4 client in the Linux kernel before 2.6.31-rc4 allows remote NFS servers to cause a denial of service (NULL pointer dereference and panic) by sending a certain response containing incorrect file attributes, which trigger attempted use of an open file that lacks NFSv4 state.

Package Linux Kernel

Published 2009-11-09

Last modified 2026-04-23

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

Weakness type

CWE-399

CVE-2009-3726 is classified as CWE-399

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

References

25 total

Showing 5 of 25 references View all on NVD

Details

CVE ID CVE-2009-3726

Severity High

CVSS score 7.8 / 10

CVSS version 2.0

Published 2009-11-09

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2009-3726?

CVE-2009-3726 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2009-3726 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2009-3726?

CVE-2009-3726 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-2009-3726?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2009-3726 patch availability.
Is CVE-2009-3726 actively exploited?

No. CVE-2009-3726 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.