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

16 total
Showing 5 of 16 references View all on NVD

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?

    Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2009-4141 patch availability.

  • 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.

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