Merge v6.18.40linux-rolling-lts

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 7 insertions, 4 deletions

diff --git a/sound/soc/sof/ipc4-control.c b/sound/soc/sof/ipc4-control.c
index 453ed1643b89..e50bc0dad18f 100644
--- a/sound/soc/sof/ipc4-control.c
+++ b/sound/soc/sof/ipc4-control.c
@@ -455,6 +455,8 @@ static int sof_ipc4_bytes_put(struct snd_sof_control *scontrol,
 	struct snd_soc_component *scomp = scontrol->scomp;
 	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
 	struct sof_abi_hdr *data = cdata->data;
+	const struct sof_abi_hdr *new_hdr =
+		(const struct sof_abi_hdr *)ucontrol->value.bytes.data;
 	size_t size;
 	int ret;
 
@@ -465,15 +467,16 @@ static int sof_ipc4_bytes_put(struct snd_sof_control *scontrol,
 		return -EINVAL;
 	}
 
-	/* scontrol->max_size has been verified to be >= sizeof(struct sof_abi_hdr) */
-	if (data->size > scontrol->max_size - sizeof(*data)) {
+	/* Validate the new data's size, not the old one */
+	if (new_hdr->size > scontrol->max_size - sizeof(*new_hdr)) {
 		dev_err_ratelimited(scomp->dev,
 				    "data size too big %u bytes max is %zu\n",
-				    data->size, scontrol->max_size - sizeof(*data));
+				    new_hdr->size,
+				    scontrol->max_size - sizeof(*new_hdr));
 		return -EINVAL;
 	}
 
-	size = data->size + sizeof(*data);
+	size = new_hdr->size + sizeof(*new_hdr);
 
 	/* copy from kcontrol */
 	memcpy(data, ucontrol->value.bytes.data, size);