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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Darren Kenny <darren.kenny@oracle.com>
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Date: Wed, 28 Oct 2020 14:43:01 +0000
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Subject: [PATCH] gnulib/argp-help: Fix dereference of a possibly NULL state
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All other instances of call to __argp_failure() where there is
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a dgettext() call is first checking whether state is NULL before
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attempting to dereference it to get the root_argp->argp_domain.
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Fixes: CID 292436
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Signed-off-by: Darren Kenny <darren.kenny@oracle.com>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/gnulib/argp-help.c | 3 ++-
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conf/Makefile.extra-dist | 1 +
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grub-core/gnulib-fix-null-state-deref.patch | 12 ++++++++++++
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3 files changed, 15 insertions(+), 1 deletion(-)
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create mode 100644 grub-core/gnulib-fix-null-state-deref.patch
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diff --git a/grub-core/gnulib/argp-help.c b/grub-core/gnulib/argp-help.c
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index b9be63f40d2..8af8be07341 100644
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--- a/grub-core/gnulib/argp-help.c
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+++ b/grub-core/gnulib/argp-help.c
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@@ -145,7 +145,8 @@ validate_uparams (const struct argp_state *state, struct uparams *upptr)
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if (*(int *)((char *)upptr + up->uparams_offs) >= upptr->rmargin)
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{
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__argp_failure (state, 0, 0,
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- dgettext (state->root_argp->argp_domain,
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+ dgettext (state == NULL ? NULL
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+ : state->root_argp->argp_domain,
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"\
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ARGP_HELP_FMT: %s value is less than or equal to %s"),
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"rmargin", up->name);
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diff --git a/conf/Makefile.extra-dist b/conf/Makefile.extra-dist
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index 883baba56d5..06606de8d19 100644
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--- a/conf/Makefile.extra-dist
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+++ b/conf/Makefile.extra-dist
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@@ -31,6 +31,7 @@ EXTRA_DIST += grub-core/genemuinit.sh
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EXTRA_DIST += grub-core/genemuinitheader.sh
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EXTRA_DIST += grub-core/gnulib-fix-null-deref.diff
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+EXTRA_DIST += grub-core/gnulib-fix-null-state-deref.patch
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EXTRA_DIST += grub-core/gnulib-fix-uninit-structure.patch
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EXTRA_DIST += grub-core/gnulib-fix-unused-value.patch
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EXTRA_DIST += grub-core/gnulib-fix-width.diff
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diff --git a/grub-core/gnulib-fix-null-state-deref.patch b/grub-core/gnulib-fix-null-state-deref.patch
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new file mode 100644
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index 00000000000..813ec09c8a1
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--- /dev/null
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+++ b/grub-core/gnulib-fix-null-state-deref.patch
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@@ -0,0 +1,12 @@
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+--- a/lib/argp-help.c 2020-10-28 14:32:19.189215988 +0000
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++++ b/lib/argp-help.c 2020-10-28 14:38:21.204673940 +0000
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+@@ -145,7 +145,8 @@
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+ if (*(int *)((char *)upptr + up->uparams_offs) >= upptr->rmargin)
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+ {
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+ __argp_failure (state, 0, 0,
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+- dgettext (state->root_argp->argp_domain,
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++ dgettext (state == NULL ? NULL
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++ : state->root_argp->argp_domain,
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+ "\
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+ ARGP_HELP_FMT: %s value is less than or equal to %s"),
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+ "rmargin", up->name);
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