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Linux Kernel CPUFREQ Proc Handler Kernel Memory Disclosure Vulnerability
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Secunia Advisory:
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SA11464
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Release Date:
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2004-04-23
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Last Update:
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2004-04-28
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Popularity:
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15,422 views
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Critical:
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Less critical
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Impact:
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Exposure of system information
Exposure of sensitive information
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Where:
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Local system
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Solution Status:
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Vendor Patch
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| OS: | Linux Kernel 2.4.x
Linux Kernel 2.6.x
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| CVE reference: | CVE-2004-0228
CVE-2004-0394
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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.
http://kernel.org/
Grant only trusted users access to affected systems.
Provided and/or discovered by:
Brad Spengler
Changelog:
2004-04-28: Updated "Solution" section.
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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