NVIDIA CUDA Driver Toolkit Discloses Information to Local Users
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SecurityTracker Alert ID: 1024962 |
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SecurityTracker URL: http://securitytracker.com/id/1024962
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CVE Reference:
CVE-2011-0636
(Links to External Site)
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Updated: Jan 27 2011
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Original Entry Date: Jan 14 2011
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Impact:
Disclosure of system information, Disclosure of user information
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Version(s): NVIDIA CUDA Toolkit 3.2
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Description:
A vulnerability was reported in NVIDIA CUDA Driver Toolkit. A local user can obtain potentially sensitive information.
The driver does not properly initialize memory. A local user can read portions of kernel memory.
Alex Granovsky of Firefly Project reported this vulnerability.
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Impact:
A local user can obtain potentially sensitive information from kernel memory.
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Solution:
No solution was available at the time of this entry.
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Vendor URL: developer.nvidia.com/object/cuda_download.html (Links to External Site)
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Cause:
Access control error
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Underlying OS:
Linux (Any)
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Message History:
None.
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Source Message Contents
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Date: Fri, 07 Jan 2011 09:09:08 -0700
Subject: CUDA drivers/Linux security hole
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Hello,
We have recently found serious security breach in CUDA Linux drivers:
http://classic.chem.msu.su/cgi-bin/ceilidh.exe/gran/gamess/forum/?C35e9ea936bHW-7675-1380-00.htm
http://classic.chem.msu.su/cgi-bin/ceilidh.exe/gran/gamess/forum/?C35e9ea936bHW-7676-1022+00.htm
In brief, driver maps pinned memory to user space but does not initialize it to zero. As an example, our simplest "proof of concept" program was able to read large fragments of files being written or read by other users.
Kind regards,
Alex Granovsky
Firefly Project
http://classic.chem.msu.su/gran/firefly/
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