What is CVE-2009-4141?

CVE-2009-4141 is a High severity Linux kernel vulnerability with a CVSS score of 7.2 out of 10. CVE-2009-4141 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2009-4141?

CVE-2009-4141 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-2009-4141?

No patch is currently available for CVE-2009-4141. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2009-4141 actively exploited?

CVE-2009-4141 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2009-4141

High

Use-after-free vulnerability in the fasync_helper function in fs/fcntl.c in the Linux kernel before 2.6.33-rc4-git1 allows local users to gain privileges via vectors that include enabling O_ASYNC (aka FASYNC or FIOASYNC) on a locked file, and then closing this file.

Package Linux Kernel

Published 2010-01-19

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-399

CVE-2009-4141 is classified as CWE-399

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

References

The following references provide additional information about CVE-2009-4141 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Archives
http://archives.neohapsis.com/archives/fulldisclosure/2010-01/0252.html

Exploit
Lists
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00002.html
Lock
http://lock.cmpxchg8b.com/5ebe2294ecd0e0f08eab7690d2a6ee69/create_elf_tables.c

Exploit
Secunia
http://secunia.com/advisories/38199

Vendor Advisory
Secunia
http://secunia.com/advisories/39033
Support
http://support.avaya.com/css/P8/documents/100073666
Red Hat
http://www.redhat.com/support/errata/RHSA-2010-0161.html
Securityfocus
http://www.securityfocus.com/bid/37806
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=547906
Oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7054
Oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9201
Red Hat
https://rhn.redhat.com/errata/RHSA-2010-0046.html
Red Hat
https://rhn.redhat.com/errata/RHSA-2010-0095.html
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=53281b6d34d44308372d16acb7fb5327609f68b6
Patch
Kernel patch commit
http://twitter.com/taviso/statuses/7744108017
Patch
Kernel patch commit
http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.33-rc4-git1.bz2
Patch

Details

CVE ID CVE-2009-4141

Severity High

CVSS score 7.2 / 10

CVSS version 2.0

Published 2010-01-19

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2009-4141?

CVE-2009-4141 is a High severity Linux kernel vulnerability with a CVSS score of 7.2 out of 10 . CVE-2009-4141 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2009-4141?

CVE-2009-4141 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-2009-4141?

No patch is currently available for CVE-2009-4141. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2009-4141 actively exploited?

No — CVE-2009-4141 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.