util/file: add validation check for extreme data chunk sizes

1 year ago · 9aff8afc62
parent cf6278f95a
commit 9aff8afc62
1 changed files with 3 additions and 0 deletions
--- a/src/util-file.c
+++ b/src/util-file.c
@ -662,6 +662,9 @@ static int FileStoreNoStoreCheck(File *ff)
 static int AppendData(
        const StreamingBufferConfig *sbcfg, File *file, const uint8_t *data, uint32_t data_len)
 {
+    DEBUG_VALIDATE_BUG_ON(
+            data_len > BIT_U32(26)); // 64MiB as a limit per chunk seems already excessive
+
    SCLogDebug("file %p data_len %u", file, data_len);
    if (StreamingBufferAppendNoTrack(file->sb, sbcfg, data, data_len) != 0) {
        SCLogDebug("file %p StreamingBufferAppendNoTrack failed", file);