@@ -243,6 +243,11 @@ static int64_t libssh_seek(URLContext *h, int64_t pos, int whence)

         return AVERROR(EINVAL);

     }

+    if (newpos < 0) {

+        av_log(h, AV_LOG_ERROR, "Seeking to nagative position.\n");

+        return AVERROR(EINVAL);

+    }

+

     if (sftp_seek64(libssh->file, newpos)) {

         av_log(h, AV_LOG_ERROR, "Error during seeking.\n");

         return AVERROR(EIO);