Public Date:
547906: CVE-2009-4141 kernel: create_elf_tables can leave urandom in a bad state

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2009-4141 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 3, 4 and Red Hat Enterprise MRG. Shipped kernels do not include upstream commit 233e70f4 that introduced the problem.

It was addressed in Red Hat Enterprise Linux 5 via

CVSS v2 metrics

Base Score 7.2
Base Metrics AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux EUS (v. 5.3 server) (kernel) RHSA-2010:0149 2010-03-17
MRG Grid for RHEL 5 Server (kernel-rt) RHSA-2010:0161 2010-03-23
Red Hat Enterprise Linux 5 (kernel) RHSA-2010:0046 2010-01-19


Red Hat would like to thank Tavis Ormandy of Google Security Team for reporting this issue.

Last Modified

CVE description copyright © 2017, The MITRE Corporation


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