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[SECURITY PATCH 060/117] script/execute: Fix NULL dereference in grub_sc


From: Daniel Kiper
Subject: [SECURITY PATCH 060/117] script/execute: Fix NULL dereference in grub_script_execute_cmdline()
Date: Tue, 2 Mar 2021 19:01:07 +0100

From: Daniel Axtens <dja@axtens.net>

Signed-off-by: Daniel Axtens <dja@axtens.net>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
 grub-core/script/execute.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/grub-core/script/execute.c b/grub-core/script/execute.c
index ce83edd4b..3ad468fce 100644
--- a/grub-core/script/execute.c
+++ b/grub-core/script/execute.c
@@ -940,7 +940,7 @@ grub_script_execute_cmdline (struct grub_script_cmd *cmd)
   struct grub_script_argv argv = { 0, 0, 0 };
 
   /* Lookup the command.  */
-  if (grub_script_arglist_to_argv (cmdline->arglist, &argv) || ! argv.args[0])
+  if (grub_script_arglist_to_argv (cmdline->arglist, &argv) || ! argv.args || 
! argv.args[0])
     return grub_errno;
 
   for (i = 0; i < argv.argc; i++)
-- 
2.11.0




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