diff --git a/src/http/modules/ngx_http_mp4_module.c b/src/http/modules/ngx_http_mp4_module.c
index 980bf57..b165d79 100644
--- a/src/http/modules/ngx_http_mp4_module.c
+++ b/src/http/modules/ngx_http_mp4_module.c
@@ -896,6 +896,13 @@ ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
atom_size = ngx_mp4_get_64value(atom_header + 8);
atom_header_size = sizeof(ngx_mp4_atom_header64_t);
+ if (atom_size < sizeof(ngx_mp4_atom_header64_t)) {
+ ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
+ "\"%s\" mp4 atom is too small:%uL",
+ mp4->file.name.data, atom_size);
+ return NGX_ERROR;
+ }
+
} else {
ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
"\"%s\" mp4 atom is too small:%uL",