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-rw-r--r--drivers/bluetooth/btmrvl_sdio.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
index ec5c45672f1d..1896e916ff7d 100644
--- a/drivers/bluetooth/btmrvl_sdio.c
+++ b/drivers/bluetooth/btmrvl_sdio.c
@@ -552,7 +552,16 @@ static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
*/
buf_len = payload[0];
- buf_len |= (u16) payload[1] << 8;
+ buf_len |= payload[1] << 8;
+ buf_len |= payload[2] << 16;
+
+ if (buf_len > blksz * num_blocks) {
+ BT_ERR("Skip incorrect packet: hdrlen %d buffer %d",
+ buf_len, blksz * num_blocks);
+ ret = -EIO;
+ goto exit;
+ }
+
type = payload[3];
switch (type) {
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