What is CVE-2009-4131?

CVE-2009-4131 is a High severity Linux kernel vulnerability with a CVSS score of 7.2 out of 10, classified as a Permissions, Privileges and Access Control flaw (CWE-264). CVE-2009-4131 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2009-4131?

CVE-2009-4131 has a CVSS score of 7.2 out of 10, rated High severity. The vector string is AV:L/AC:L/Au:N/C:C/I:C/A:C.

Is there a patch available for CVE-2009-4131?

No patch is currently available for CVE-2009-4131. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2009-4131 actively exploited?

CVE-2009-4131 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Permissions, Privileges and Access Control (CWE-264)?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/264.html

CVE-2009-4131

High

The EXT4_IOC_MOVE_EXT (aka move extents) ioctl implementation in the ext4 filesystem in the Linux kernel before 2.6.32-git6 allows local users to overwrite arbitrary files via a crafted request, related to insufficient checks for file permissions.

Package Linux Kernel

Published 2009-12-13

Last modified 2026-04-23

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

7.2

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

Availability

Vector string

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

Weakness type

CWE-264

CVE-2009-4131 is a Permissions, Privileges and Access Control vulnerability

What is Permissions, Privileges and Access Control?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2009-4131 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
Secunia
http://secunia.com/advisories/37658

Vendor Advisory
Secunia
http://secunia.com/advisories/37686
Secunia
http://secunia.com/advisories/38017
Mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2009:329
Theregister
http://www.theregister.co.uk/2009/12/11/linux_kernel_bugs_patched/
Ubuntu Security
http://www.ubuntu.com/usn/USN-869-1
Red Hat
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00702.html
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/tytso/ext4.git%3Ba=commit%3Bh=4a58579b9e4e2a35d57e6c9c8483e52f6f1b7fd6
Patch
Kernel patch commit
http://lkml.org/lkml/2009/12/9/255
Patch
Kernel patch commit
http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.32-git6.log
Patch

6 patch commits total View all on NVD

Details

CVE ID CVE-2009-4131

Severity High

CVSS score 7.2 / 10

CVSS version 2.0

Published 2009-12-13

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2009-4131?

CVE-2009-4131 is a High severity Linux kernel vulnerability with a CVSS score of 7.2 out of 10 , classified as a Permissions, Privileges and Access Control flaw (CWE-264) . CVE-2009-4131 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2009-4131?

CVE-2009-4131 has a CVSS score of 7.2 out of 10, rated High severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:C/I:C/A:C.
Is there a patch available for CVE-2009-4131?

No patch is currently available for CVE-2009-4131. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2009-4131 actively exploited?

No — CVE-2009-4131 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Permissions, Privileges and Access Control (CWE-264)?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. View CWE-264 on MITRE CWE →