From: Wenwen Wang wenwen@cs.uga.edu
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@cs.uga.edu Cc: stable@vger.kernel.org Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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;