From: Dan Rosenberg <drosenberg@vsecurity.com>
Date: Wed, 22 Sep 2010 20:05:09 +0000 (-0700)
Subject: drivers/video/sis/sis_main.c: prevent reading uninitialized stack memory
X-Git-Tag: v2.6.36-rc6~61
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd02db9de73faebc51240619c7c7f99bee9f65c7;p=pandora-kernel.git

drivers/video/sis/sis_main.c: prevent reading uninitialized stack memory

The FBIOGET_VBLANK device ioctl allows unprivileged users to read 16 bytes
of uninitialized stack memory, because the "reserved" member of the
fb_vblank struct declared on the stack is not altered or zeroed before
being copied back to the user.  This patch takes care of it.

Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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