File LibVNCServer-CVE-2018-15127.patch of Package LibVNCServer.9870

diff --git a/libvncserver/rfbserver.c b/libvncserver/rfbserver.c
index ed1365a5..6ca511fe 100644
--- a/libvncserver/rfbserver.c
+++ b/libvncserver/rfbserver.c
@@ -1465,7 +1465,7 @@ char *rfbProcessFileTransferReadBuffer(rfbClientPtr cl, uint32_t length)
     rfbLog("rfbProcessFileTransferReadBuffer(%dlen)\n", length);
     */
     if (length>0) {
-        buffer=malloc(length+1);
+        buffer=malloc((uint64_t)length+1);
         if (buffer!=NULL) {
             if ((n = rfbReadExact(cl, (char *)buffer, length)) <= 0) {
                 if (n != 0)