From: Wenwen Wang <wenwen@xxxxxxxxxx>
commit a67060201b746a308b1674f66bf289c9faef6d09 upstream.
In snd_usb_get_audioformat_uac3(), a structure for channel maps 'chmap' is
allocated through kzalloc() before the execution goto 'found_clock'.
However, this structure is not deallocated if the memory allocation for
'pd' fails, leading to a memory leak bug.
To fix the above issue, free 'fp->chmap' before returning NULL.
Fixes: 7edf3b5e6a45 ("ALSA: usb-audio: AudioStreaming Power Domain parsing")
Signed-off-by: Wenwen Wang <wenwen@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/usb/stream.c | 1 +
1 file changed, 1 insertion(+)
--- a/sound/usb/stream.c
+++ b/sound/usb/stream.c
@@ -1053,6 +1053,7 @@ found_clock:
pd = kzalloc(sizeof(*pd), GFP_KERNEL);
if (!pd) {
+ kfree(fp->chmap);
kfree(fp->rate_table);
kfree(fp);
return NULL;
