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Insecure Library Loading

Secunia Advisory SA11464

Linux Kernel CPUFREQ Proc Handler Kernel Memory Disclosure Vulnerability

Secunia Advisory

SA11464

Get alerted and manage the vulnerability life cycle

Release Date

2004-04-23

Last Update

2004-04-28

Popularity

19,232 views

Comments

0 comments

Criticality level

Less critical

Impact

Exposure of system information
Exposure of sensitive information

Where

Local system

Authentication level

Available in Customer Area

Report reliability

Available in Customer Area

Solution Status

Vendor Patch

Systems affected

Available in Customer Area

Approve distribution

Available in Customer Area

Operating System

Linux Kernel 2.4.x

Linux Kernel 2.6.x

Secunia CVSS Score

Available in Customer Area

CVE Reference(s)

CVE-2004-0228 CVSS available in Customer Area
CVE-2004-0394 CVSS available in Customer Area

Description

Brad Spengler has reported a vulnerability in the Linux kernel, which can be exploited by malicious, local users to gain knowledge of sensitive information.

The vulnerability is caused due to a signedness error within the cpufreq proc handler, which allows arbitrary kernel memory regions to be read.

NOTE: A potential boundary error within the "panic()" function has also been reported by Shaun Colley. However, it is reportedly unlikely that this issue is exploitable.

Solution
The vulnerability has been fixed in version 2.6.6-rc3.
Further details available in Customer Area

Provided and/or discovered by
Brad Spengler

Changelog
Further details available in Customer Area

Deep Links
Links available in Customer Area

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Linux Kernel CPUFREQ Proc Handler Kernel Memory Disclosure Vulnerability

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Secunia Advisory SA11464

Linux Kernel CPUFREQ Proc Handler Kernel Memory Disclosure Vulnerability

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