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The intent was to check sizeof(*cs_desc), which is 3, instead. Fixes: ecfd41166b72 ("ALSA: usb-audio: Validate UAC3 cluster segment descri= ptors") Signed-off-by: Dan Carpenter --- sound/usb/stream.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/usb/stream.c b/sound/usb/stream.c index acf3dc2d79e0..5c235a5ba7e1 100644 --- a/sound/usb/stream.c +++ b/sound/usb/stream.c @@ -349,7 +349,7 @@ snd_pcm_chmap_elem *convert_chmap_v3(struct uac3_cluste= r_header_descriptor u16 cs_len; u8 cs_type; =20 - if (len < sizeof(*p)) + if (len < sizeof(*cs_desc)) break; cs_len =3D le16_to_cpu(cs_desc->wLength); if (len < cs_len) --=20 2.47.2