dsp: Fix issues due to accessing array out of bounds

Add check for ASM_ACTIVE_STREAMS_ALLOWED
sessions to avoid accessing the array out of bounds.

Change-Id: I7b2fe2dffdb3132fded0b1e268ebd29139050823
Signed-off-by: Prasad Kumpatla <[email protected]>

dsp/rtac.c

@@ -957,6 +957,12 @@ void rtac_set_asm_handle(u32 session_id, void *handle)
 {
 	pr_debug("%s\n", __func__);
 
+	if (session_id >= (ASM_ACTIVE_STREAMS_ALLOWED + 1)) {
+		pr_err_ratelimited("%s: Invalid Session = %d\n",
+				 __func__, session_id);
+		return;
+	}
+
 	mutex_lock(&rtac_asm_apr_mutex);
 	rtac_asm_apr_data[session_id].apr_handle = handle;
 	mutex_unlock(&rtac_asm_apr_mutex);
@@ -965,6 +971,12 @@ void rtac_set_asm_handle(u32 session_id, void *handle)
 bool rtac_make_asm_callback(u32 session_id, uint32_t *payload,
 	u32 payload_size)
 {
+	if (session_id >= (ASM_ACTIVE_STREAMS_ALLOWED + 1)) {
+		pr_err_ratelimited("%s: Invalid Session = %d\n",
+				 __func__, session_id);
+		return false;
+	}
+
 	if (atomic_read(&rtac_asm_apr_data[session_id].cmd_state) != 1)
 		return false;