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

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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>

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Dan Rosenberg 2010-09-25 11:07:27 -04:00 • committed by Takashi Iwai

parent 0873a5ae74

commit e68d3b316a

2 changed files with 2 additions and 0 deletions

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sound/pci/rme9652/hdsp.c

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sound/pci/rme9652/hdspm.c

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