xref: /OK3568_Linux_fs/buildroot/boot/grub2/0057-gnulib-argp-help-Fix-dereference-of-a-possibly-NULL-.patch (revision 4882a59341e53eb6f0b4789bf948001014eff981)

From 3a37bf120a9194c373257c70175cdb5b337bc107 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>
[Add changes to generated files]
Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
---
 Makefile.in                                             |  1 +
 conf/Makefile.extra-dist                                |  1 +
 grub-core/lib/gnulib-patches/fix-null-state-deref.patch | 12 ++++++++++++
 grub-core/lib/gnulib/argp-help.c                        |  3 ++-
 4 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 grub-core/lib/gnulib-patches/fix-null-state-deref.patch

diff --git a/Makefile.in b/Makefile.in
index d58a7d7..812b7c2 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -2742,6 +2742,7 @@ EXTRA_DIST = autogen.sh geninit.sh gentpl.py Makefile.util.def \
 	grub-core/gensyminfo.sh.in grub-core/gensymlist.sh \
 	grub-core/genemuinit.sh grub-core/genemuinitheader.sh \
 	grub-core/lib/gnulib-patches/fix-null-deref.patch \
+	grub-core/lib/gnulib-patches/fix-null-state-deref.patch \
 	grub-core/lib/gnulib-patches/fix-uninit-structure.patch \
 	grub-core/lib/gnulib-patches/fix-unused-value.patch \
 	grub-core/lib/gnulib-patches/fix-width.patch \
diff --git a/conf/Makefile.extra-dist b/conf/Makefile.extra-dist
index 9e55458..96d7e69 100644
--- a/conf/Makefile.extra-dist
+++ b/conf/Makefile.extra-dist
@@ -29,6 +29,7 @@ EXTRA_DIST += grub-core/genemuinit.sh
 EXTRA_DIST += grub-core/genemuinitheader.sh

 EXTRA_DIST += grub-core/lib/gnulib-patches/fix-null-deref.patch
+EXTRA_DIST += grub-core/lib/gnulib-patches/fix-null-state-deref.patch
 EXTRA_DIST += grub-core/lib/gnulib-patches/fix-uninit-structure.patch
 EXTRA_DIST += grub-core/lib/gnulib-patches/fix-unused-value.patch
 EXTRA_DIST += grub-core/lib/gnulib-patches/fix-width.patch
diff --git a/grub-core/lib/gnulib-patches/fix-null-state-deref.patch b/grub-core/lib/gnulib-patches/fix-null-state-deref.patch
new file mode 100644
index 0000000..813ec09
--- /dev/null
+++ b/grub-core/lib/gnulib-patches/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);
diff --git a/grub-core/lib/gnulib/argp-help.c b/grub-core/lib/gnulib/argp-help.c
index 5d8f451..c75568c 100644
--- a/grub-core/lib/gnulib/argp-help.c
+++ b/grub-core/lib/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);
--
2.14.2