tree e5e1760d61f665bfb3216ef6de7c3a9c6b26d80c
parent 023535732f4db01af4921f20f058bc4561d9add7
author Luciano Coelho <coelho@ti.com> 1301676122 +0300
committer John W. Linville <linville@tuxdriver.com> 1301944932 -0400

wl12xx: fix potential buffer overflow in testmode nvs push

We were allocating the size of the NVS file struct and not checking
whether the length of the buffer passed was correct before copying it
into the allocated memory.  This is a security hole because buffer
overflows can occur if the userspace passes a bigger file than what is
expected.

With this patch, we check if the size of the data passed from
userspace matches the size required.

This bug was introduced in 2.6.36.

Cc: stable@kernel.org
Reported-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>