ALSA: emu10k1: validate min/max values of translated controls
authorOswald Buddenhagen <oswald.buddenhagen@gmx.de>
Sun, 14 May 2023 17:03:19 +0000 (19:03 +0200)
committerTakashi Iwai <tiwai@suse.de>
Mon, 15 May 2023 20:06:19 +0000 (22:06 +0200)
commit1a38ae579606dae836dced573d5ffa78cce6fc48
tree2140a9898befdc7850f6a4f33d5d34db82ceb9fe
parentbb5ceb43b7bfa166fd5d739d51ad46c1cfb225e3
ALSA: emu10k1: validate min/max values of translated controls

User space could pass arbitrary ranges, which were uncritically
accepted. This could lead to table lookups out of range.

I don't think that this is a security issue, as it only allowed someone
with CAP_SYS_ADMIN to crash the kernel, but still.

Setting an invalid translation mode will also be rejected now. That did
no harm, but it's still better to detect errors.

Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230514170323.3408834-4-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/emu10k1/emufx.c