From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
[ Upstream commit c0e72058d5e21982e61a29de6b098f7c1f0db498 ]
This code was supposed to return an error code if init_stream()
failed, but it instead freed dg00x->rx_stream and returned success.
This potentially leads to a use after free.
Fixes: 9a08067ec318 ("ALSA: firewire-digi00x: support AMDTP domain")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Link: https://lore.kernel.org/r/c224cbd5-d9e2-4cd4-9bcf-2138eb1d35c6@kili.mountain
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
sound/firewire/digi00x/digi00x-stream.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/sound/firewire/digi00x/digi00x-stream.c b/sound/firewire/digi00x/digi00x-stream.c
index a15f55b0dce37..295163bb8abb6 100644
--- a/sound/firewire/digi00x/digi00x-stream.c
+++ b/sound/firewire/digi00x/digi00x-stream.c
@@ -259,8 +259,10 @@ int snd_dg00x_stream_init_duplex(struct snd_dg00x *dg00x)
return err;
err = init_stream(dg00x, &dg00x->tx_stream);
- if (err < 0)
+ if (err < 0) {
destroy_stream(dg00x, &dg00x->rx_stream);
+ return err;
+ }
err = amdtp_domain_init(&dg00x->domain);
if (err < 0) {
--
2.39.2
