--- src/dock.c
+++ src/dock.c
@@ -3002,6 +3002,8 @@
             args[i] = argv[i];
         }
         args[argc] = NULL;
+        for(i = 3; i < 1024; i++)
+           close(i);
         execvp(argv[0], args);
         exit(111);
     }
--- src/main.c
+++ src/main.c
@@ -302,12 +302,16 @@
     pid = fork();
 
     if (pid==0) {
+	int i;
 
         SetupEnvironment(scr);
 
 #ifdef HAVE_SETSID
         setsid();
 #endif
+	for(i = 3; i < 1024; i++)
+		close(i);
+
         execl(shell, shell, "-c", command, NULL);
         wsyserror("could not execute %s -c %s", shell, command);
         Exit(-1);
@@ -337,6 +341,7 @@
     int in_fd[2];
     int out_fd[2];
     int err_fd[2];
+    int i;
     pid_t pid;
 
     SetupEnvironment(scr);
@@ -389,7 +394,9 @@
         close(in_fd[1]);
         close(out_fd[1]);
         close(err_fd[1]);
-
+        
+        for(i = 3; i < 1024; i++)
+            close(i);
         execl("/bin/sh", "/bin/sh", "-c", wPreferences.logger_shell, NULL);
         wsyserror("could not execute %s\n", wPreferences.logger_shell);
         exit(1);
--- src/session.c
+++ src/session.c
@@ -398,6 +398,10 @@
             args[i] = argv[i];
         }
         args[argc] = NULL;
+
+        for(i = 3; i < 1024; i++)
+           close(i);
+
         execvp(argv[0], args);
         exit(111);
     }