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V4L/DVB: ivtvfb: prevent reading uninitialized stack memory
authorDan Rosenberg <drosenberg@vsecurity.com>
Wed, 15 Sep 2010 21:44:22 +0000 (18:44 -0300)
committerMauro Carvalho Chehab <mchehab@redhat.com>
Tue, 28 Sep 2010 01:22:11 +0000 (22:22 -0300)
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>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/video/ivtv/ivtvfb.c patch | blob | history

diff --cc drivers/media/video/ivtv/ivtvfb.c
Simple merge
Pandora Kernel Repository