Address signed integer overflow (#751)

Credit: Oss-Fuzz Issue: https://issues.oss-fuzz.com/issues/42526392
xiph · Oct 8, 2024 · 2a23a2a · 2a23a2a
1 parent ed4e1c4
commit 2a23a2a
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/flac/main.c b/src/flac/main.c
@@ -1682,7 +1682,8 @@ int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_
 			option_values.serial_number = rand();
 		option_values.has_serial_number = true;
 	}
-	encode_options.serial_number = option_values.serial_number++;
+	encode_options.serial_number = option_values.serial_number;
+	option_values.serial_number = (uint32_t)option_values.serial_number + 1;
 #endif
 	encode_options.lax = option_values.lax;
 	encode_options.padding = option_values.padding;