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| author | Youngjun Lee <yjjuny.lee@samsung.com> | 2025-06-23 20:05:25 +0900 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2025-06-23 17:08:56 +0200 |
| commit | fb4e2a6e8f28a3c0ad382e363aeb9cd822007b8a (patch) | |
| tree | fedf1f00c2377631da76dcf676efe75c97db9054 /scripts/lib/kdoc/kdoc_output.py | |
| parent | 9a07ca9a4015f8f71e2b594ee76ac55483babd89 (diff) | |
ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3()
In snd_usb_get_audioformat_uac3(), the length value returned from
snd_usb_ctl_msg() is used directly for memory allocation without
validation. This length is controlled by the USB device.
The allocated buffer is cast to a uac3_cluster_header_descriptor
and its fields are accessed without verifying that the buffer
is large enough. If the device returns a smaller than expected
length, this leads to an out-of-bounds read.
Add a length check to ensure the buffer is large enough for
uac3_cluster_header_descriptor.
Signed-off-by: Youngjun Lee <yjjuny.lee@samsung.com>
Fixes: 9a2fe9b801f5 ("ALSA: usb: initial USB Audio Device Class 3.0 support")
Link: https://patch.msgid.link/20250623-uac3-oob-fix-v1-1-527303eaf40a@samsung.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'scripts/lib/kdoc/kdoc_output.py')
0 files changed, 0 insertions, 0 deletions