From 02f508369bde45a1db4827487422c214c74cb039 Mon Sep 17 00:00:00 2001
From: Guilherme Amadio <amadio@cern.ch>
Date: Tue, 26 Nov 2024 11:35:58 +0100
Subject: [PATCH] [XrdOuc] Fix potential null pointer dereference in copyCGI

---
 src/XrdOuc/XrdOucTPC.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/XrdOuc/XrdOucTPC.cc b/src/XrdOuc/XrdOucTPC.cc
index 4920e281c3f..b3a46ce751f 100644
--- a/src/XrdOuc/XrdOucTPC.cc
+++ b/src/XrdOuc/XrdOucTPC.cc
@@ -237,13 +237,15 @@ int XrdOucTPC::copyCGI(const char *cgi, char *Buff, int Blen)
    int xlen;
    bool eqs;
 
+   if (!cgi) {*Buff = 0; return 0;}
+
 // Skip over initial ampersands
 //
    while(*cgi == '&' && *cgi) cgi++;
 
 // Check if there is anything here
 //
-   if (!cgi || *cgi == 0) {*Buff = 0; return 0;}
+   if (!*cgi) {*Buff = 0; return 0;}
    Blen--;
 
 // Copy all keys except system oriented ones.