What is CVE-2009-0935?

CVE-2009-0935 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Improper Locking flaw (CWE-667). CVE-2009-0935 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2009-0935?

CVE-2009-0935 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2009-0935?

No patch is currently available for CVE-2009-0935. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2009-0935 actively exploited?

CVE-2009-0935 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Improper Locking (CWE-667)?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/667.html

CVE-2009-0935

Medium

The inotify_read function in the Linux kernel 2.6.27 to 2.6.27.13, 2.6.28 to 2.6.28.2, and 2.6.29-rc3 allows local users to cause a denial of service (OOPS) via a read with an invalid address to an inotify instance, which causes the device's event list mutex to be unlocked twice and prevents proper synchronization of a data structure for the inotify instance.

Package Linux Kernel

Published 2009-03-18

Last modified 2026-04-23

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-667

CVE-2009-0935 is a Improper Locking vulnerability

What is Improper Locking?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2009-0935 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.3

Broken Link
Openwall
http://www.openwall.com/lists/oss-security/2009/03/18/5

Mailing List
Openwall
http://www.openwall.com/lists/oss-security/2009/03/19/2

Mailing List
Exchange
https://exchange.xforce.ibmcloud.com/vulnerabilities/49331

Third Party Advisory VDB Entry
Kernel patch commit
http://marc.info/?l=linux-kernel&m=123337123501681&w=2
Patch
Kernel patch commit
http://www.openwall.com/lists/oss-security/2009/03/06/2
Patch
Kernel patch commit
http://www.securityfocus.com/bid/33624
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2009-0935

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2009-03-18

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2009-0935?

CVE-2009-0935 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Improper Locking flaw (CWE-667) . CVE-2009-0935 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2009-0935?

CVE-2009-0935 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2009-0935?

No patch is currently available for CVE-2009-0935. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2009-0935 actively exploited?

No — CVE-2009-0935 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Improper Locking (CWE-667)?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. View CWE-667 on MITRE CWE →