[X2Go-Commits] [nx-libs] 391/429: Clipboard.c: sanity check for invalid resource

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x2go pushed a commit to branch 3.6.x
in repository nx-libs.

commit 124f5a5c6e4f37880c482d1037636ccfd7b6fca0
Author: Ulrich Sibiller <uli42 at gmx.de>
Date:   Tue Mar 2 23:12:03 2021 +0100

    Clipboard.c: sanity check for invalid resource
---
 nx-X11/programs/Xserver/hw/nxagent/Clipboard.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c b/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c
index 8844c88df..7fefd5ee1 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c
@@ -1592,6 +1592,14 @@ Bool nxagentCollectPropertyEventFromXServer(int resource)
 
   int index = 0;
 
+  if (resource < 0)
+  {
+    #ifdef DEBUG
+    fprintf (stderr, "%s: resource [%d] is invalid.\n", __func__, resource);
+    #endif
+    return False;
+  }
+
   /* determine the selection we are talking about here */
   for (index = 0; index < nxagentMaxSelections; index++)
   {

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