stream_file: don't allow to open standard streams during fuzzing

To avoid all sorts of I/O loops.
mpv-player · Dec 29, 2024 · 1dd0e49 · 1dd0e49
1 parent 83bb498
commit 1dd0e49
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/stream/stream_file.c b/stream/stream_file.c
@@ -309,6 +309,10 @@ static int open_f(stream_t *stream, const struct stream_open_args *args)
             MP_ERR(stream, "Invalid FD: %d\n", p->fd);
             return STREAM_ERROR;
         }
+#endif
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+        if (p->fd == STDIN_FILENO || p->fd == STDOUT_FILENO || p->fd == STDERR_FILENO)
+            return STREAM_ERROR;
 #endif
         if (is_fdclose)
             p->close = true;