Public Date:
548876: CVE-2009-4271 kernel: 32bit process on 64bit system can trigger a kernel panic

The MITRE CVE dictionary describes this issue as:

The Linux kernel 2.6.9 through 2.6.17 on the x86_64 and amd64 platforms allows local users to cause a denial of service (panic) via a 32-bit application that calls mprotect on its Virtual Dynamic Shared Object (VDSO) page and then triggers a segmentation fault.

Find out more about CVE-2009-4271 from the MITRE CVE dictionary dictionary and NIST NVD.


This security issue did not affect the Linux kernels as shipped with Red Hat Enterprise Linux 3, 5 and Red Hat Enterprise MRG. This issue was addressed in Red Hat Enterprise Linux 4 via

CVSS v2 metrics

Base Score 4.9
Base Metrics AV:L/AC:L/Au:N/C:N/I:N/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
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 4 (kernel) RHSA-2010:0146 2010-03-17


Red Hat would like to thank STMicroelectronics for responsibly reporting this issue.


Last Modified

CVE description copyright © 2017, The MITRE Corporation