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ALSA: usx2y: Fix potential leaks of uninitialized memory
authorTakashi Iwai <tiwai@suse.de>
Mon, 17 May 2021 13:15:38 +0000 (15:15 +0200)
committerTakashi Iwai <tiwai@suse.de>
Mon, 17 May 2021 14:04:10 +0000 (16:04 +0200)
commit4e268db74770b454b877ab5260f1868a457d212c
treed739e23399bb1edb4774a6b005ceaab388f33dedtree
parenta829dd5b3840fd9a24608ed73eb21ba239ae5334commit | diff
ALSA: usx2y: Fix potential leaks of uninitialized memory

usx2y drivers may expose the allocated pages via mmap, but it performs
zero-clear only for the struct size, not aligned with the page size.
This leaves out some uninitialized trailing bytes.

This patch fixes the clearance to cover all memory that are exposed to
user-space.

Link: https://lore.kernel.org/r/20210517131545.27252-5-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/usb/usx2y/usX2Yhwdep.c diff | blob | history
sound/usb/usx2y/usbus428ctldefs.h diff | blob | history
sound/usb/usx2y/usbusx2y.c diff | blob | history
sound/usb/usx2y/usx2yhwdeppcm.c diff | blob | history
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