Check for negative index in dlt_file_message

Fixes COVESA#436 Signed-off-by: Michael Methner <mmethner@de.adit-jv.com>
michael-methner · Jan 27, 2023 · 8ac9a08 · 8ac9a08
1 parent 198715e
commit 8ac9a08
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/shared/dlt_common.c b/src/shared/dlt_common.c
@@ -1718,7 +1718,7 @@ DltReturnValue dlt_file_message(DltFile *file, int index, int verbose)
         return DLT_RETURN_WRONG_PARAMETER;
 
     /* check if message is in range */
-    if (index >= file->counter) {
+    if (index < 0 || index >= file->counter) {
         dlt_vlog(LOG_WARNING, "Message %d out of range!\r\n", index);
         return DLT_RETURN_WRONG_PARAMETER;
     }