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CUDA drivers/Linux security hole
- To: bugtraq@xxxxxxxxxxxxxxxxx
- Subject: CUDA drivers/Linux security hole
- From: gran@xxxxxxxxxxxxxxxxxxx
- Date: Fri, 7 Jan 2011 09:09:08 -0700
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/