tree f4d93f613001c195d66dffaa5b3593dcaf4e8d53
parent 266d4f40370757459f8aa063976c932d0de5e59b
author Marcel Holtmann <marcel@holtmann.org> 1173215520 +0100
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1173232864 -0800

[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>