From: Marcel Holtmann <marcel@holtmann.org>
Date: Tue, 6 Mar 2007 21:12:00 +0000 (+0100)
Subject: [PATCH] Fix buffer overflow in Omnikey CardMan 4040 driver (CVE-2007-0005)
X-Git-Tag: v2.6.21-rc3~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=059819a41d4331316dd8ddcf977a24ab338f4300;p=pandora-kernel.git

[PATCH] Fix buffer overflow in Omnikey CardMan 4040 driver (CVE-2007-0005)

Based on a patch from Don Howard <dhoward@redhat.com>

When calling write() with a buffer larger than 512 bytes, the
driver's write buffer overflows, allowing to overwrite the EIP and
execute arbitrary code with kernel privileges.

In read(), there exists a similar problem, but coming from the device.
A malicous or buggy device sending more than 512 bytes can overflow
of the driver's read buffer, with the same effects as above.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Harald Welte <laforge@gnumonks.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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