ALSA: usb-audio: Validate UAC3 cluster segment descriptors

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UAC3 class segment descriptors need to be verified whether their sizes
match with the declared lengths and whether they fit with the
allocated buffer sizes, too.  Otherwise malicious firmware may lead to
the unexpected OOB accesses.

Fixes: 11785ef532 ("ALSA: usb-audio: Initial Power Domain support")
Reported-and-tested-by: Youngjun Lee <yjjuny.lee@samsung.com>
Cc: <stable@vger.kernel.org>
Link: https://patch.msgid.link/20250814081245.8902-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Takashi Iwai 2025-08-14 10:12:43 +02:00

parent d832ccbc30

commit ecfd41166b

1 changed files with 22 additions and 3 deletions

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sound/usb/stream.c

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