tree 6dddc80b93622ba0bfe626ae1f0b0fddd9395072
parent 0873a5ae747847ee55a63db409dff3476e45bcd9
author Dan Rosenberg <drosenberg@vsecurity.com> 1285427247 -0400
committer Takashi Iwai <tiwai@suse.de> 1285429582 +0200

ALSA: sound/pci/rme9652: prevent reading uninitialized stack memory

The SNDRV_HDSP_IOCTL_GET_CONFIG_INFO and
SNDRV_HDSP_IOCTL_GET_CONFIG_INFO ioctls in hdspm.c and hdsp.c allow
unprivileged users to read uninitialized kernel stack memory, because
several fields of the hdsp{m}_config_info structs declared on the stack
are 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: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>