From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Darren Kenny <darren.kenny@oracle.com>
Date: Wed, 28 Oct 2020 14:43:01 +0000
Subject: [PATCH] gnulib/argp-help: Fix dereference of a possibly NULL state

All other instances of call to __argp_failure() where there is
a dgettext() call is first checking whether state is NULL before
attempting to dereference it to get the root_argp->argp_domain.

Fixes: CID 292436

Signed-off-by: Darren Kenny <darren.kenny@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
 grub-core/gnulib/argp-help.c                |  3 ++-
 conf/Makefile.extra-dist                    |  1 +
 grub-core/gnulib-fix-null-state-deref.patch | 12 ++++++++++++
 3 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 grub-core/gnulib-fix-null-state-deref.patch

diff --git a/grub-core/gnulib/argp-help.c b/grub-core/gnulib/argp-help.c
index b9be63f40d2..8af8be07341 100644
--- a/grub-core/gnulib/argp-help.c
+++ b/grub-core/gnulib/argp-help.c
@@ -145,7 +145,8 @@ validate_uparams (const struct argp_state *state, struct uparams *upptr)
       if (*(int *)((char *)upptr + up->uparams_offs) >= upptr->rmargin)
         {
           __argp_failure (state, 0, 0,
-                          dgettext (state->root_argp->argp_domain,
+                          dgettext (state == NULL ? NULL
+                                    : state->root_argp->argp_domain,
                                     "\
 ARGP_HELP_FMT: %s value is less than or equal to %s"),
                           "rmargin", up->name);
diff --git a/conf/Makefile.extra-dist b/conf/Makefile.extra-dist
index 883baba56d5..06606de8d19 100644
--- a/conf/Makefile.extra-dist
+++ b/conf/Makefile.extra-dist
@@ -31,6 +31,7 @@ EXTRA_DIST += grub-core/genemuinit.sh
 EXTRA_DIST += grub-core/genemuinitheader.sh
 
 EXTRA_DIST += grub-core/gnulib-fix-null-deref.diff
+EXTRA_DIST += grub-core/gnulib-fix-null-state-deref.patch
 EXTRA_DIST += grub-core/gnulib-fix-uninit-structure.patch
 EXTRA_DIST += grub-core/gnulib-fix-unused-value.patch
 EXTRA_DIST += grub-core/gnulib-fix-width.diff
diff --git a/grub-core/gnulib-fix-null-state-deref.patch b/grub-core/gnulib-fix-null-state-deref.patch
new file mode 100644
index 00000000000..813ec09c8a1
--- /dev/null
+++ b/grub-core/gnulib-fix-null-state-deref.patch
@@ -0,0 +1,12 @@
+--- a/lib/argp-help.c	2020-10-28 14:32:19.189215988 +0000
++++ b/lib/argp-help.c	2020-10-28 14:38:21.204673940 +0000
+@@ -145,7 +145,8 @@
+       if (*(int *)((char *)upptr + up->uparams_offs) >= upptr->rmargin)
+         {
+           __argp_failure (state, 0, 0,
+-                          dgettext (state->root_argp->argp_domain,
++                          dgettext (state == NULL ? NULL
++                                    : state->root_argp->argp_domain,
+                                     "\
+ ARGP_HELP_FMT: %s value is less than or equal to %s"),
+                           "rmargin", up->name);