grub: fix an unitialized re_token in gnulib

This patch adds a fix for an unitialized re_token in grub's gnulib.
It is a part of a security series [1].

[1] https://lists.gnu.org/archive/html/grub-devel/2021-03/msg00007.html

(From OE-Core rev: 0ce9c21b776ef6bfeaef665829324d7a04c22ce9)

Signed-off-by: Marta Rybczynska <marta.rybczynska@huawei.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 56 insertions, 0 deletions

diff --git a/meta/recipes-bsp/grub/files/0012-gnulib-regcomp-Fix-uninitialized-re_token.patch b/meta/recipes-bsp/grub/files/0012-gnulib-regcomp-Fix-uninitialized-re_token.patch
new file mode 100644
index 0000000000..0507e0cd66
--- /dev/null
+++ b/meta/recipes-bsp/grub/files/0012-gnulib-regcomp-Fix-uninitialized-re_token.patch
@@ -0,0 +1,55 @@
+From 512b6bb380a77233b88c84b7a712896c70281d2f Mon Sep 17 00:00:00 2001
+From: Darren Kenny <darren.kenny@oracle.com>
+Date: Tue, 24 Nov 2020 18:04:22 +0000
+Subject: [PATCH] gnulib/regcomp: Fix uninitialized re_token
+
+This issue has been fixed in the latest version of gnulib, so to
+maintain consistency, I've backported that change rather than doing
+something different.
+
+Fixes: CID 73828
+
+Signed-off-by: Darren Kenny <darren.kenny@oracle.com>
+Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
+
+Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/commit/?id=03477085f9a33789ba6cca7cd49ab9326a1baa0e]
+Signed-off-by: Marta Rybczynska <marta.rybczynska@huawei.com>
+---
+ conf/Makefile.extra-dist                          |  1 +
+ .../gnulib-patches/fix-regcomp-uninit-token.patch | 15 +++++++++++++++
+ 2 files changed, 16 insertions(+)
+ create mode 100644 grub-core/lib/gnulib-patches/fix-regcomp-uninit-token.patch
+
+diff --git a/conf/Makefile.extra-dist b/conf/Makefile.extra-dist
+index d27d3a9..ffe6829 100644
+--- a/conf/Makefile.extra-dist
++++ b/conf/Makefile.extra-dist
+@@ -30,6 +30,7 @@ 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-regcomp-uninit-token.patch
+ EXTRA_DIST += grub-core/lib/gnulib-patches/fix-regexec-null-deref.patch
+ EXTRA_DIST += grub-core/lib/gnulib-patches/fix-uninit-structure.patch
+ EXTRA_DIST += grub-core/lib/gnulib-patches/fix-unused-value.patch
+diff --git a/grub-core/lib/gnulib-patches/fix-regcomp-uninit-token.patch b/grub-core/lib/gnulib-patches/fix-regcomp-uninit-token.patch
+new file mode 100644
+index 0000000..02e0631
+--- /dev/null
++++ b/grub-core/lib/gnulib-patches/fix-regcomp-uninit-token.patch
+@@ -0,0 +1,15 @@
++--- a/lib/regcomp.c    2020-11-24 17:06:08.159223858 +0000
+++++ b/lib/regcomp.c    2020-11-24 17:06:15.630253923 +0000
++@@ -3808,11 +3808,7 @@
++ create_tree (re_dfa_t *dfa, bin_tree_t *left, bin_tree_t *right,
++            re_token_type_t type)
++ {
++-  re_token_t t;
++-#if defined GCC_LINT || defined lint
++-  memset (&t, 0, sizeof t);
++-#endif
++-  t.type = type;
+++  re_token_t t = { .type = type };
++   return create_token_tree (dfa, left, right, &t);
++ }
++ 
diff --git a/meta/recipes-bsp/grub/grub2.inc b/meta/recipes-bsp/grub/grub2.inc
index e7168e75ea..4ddb9fc4f1 100644
--- a/meta/recipes-bsp/grub/grub2.inc
+++ b/meta/recipes-bsp/grub/grub2.inc
@@ -58,6 +58,7 @@ SRC_URI = "${GNU_MIRROR}/grub/grub-${PV}.tar.gz \
            file://0009-gnulib-regcomp-Fix-uninitialized-token-structure.patch \
            file://0010-gnulib-argp-help-Fix-dereference-of-a-possibly-NULL-.patch \
            file://0011-gnulib-regexec-Fix-possible-null-dereference.patch \
+           file://0012-gnulib-regcomp-Fix-uninitialized-re_token.patch \
            "
 SRC_URI[md5sum] = "5ce674ca6b2612d8939b9e6abed32934"
 SRC_URI[sha256sum] = "f10c85ae3e204dbaec39ae22fa3c5e99f0665417e91c2cb49b7e5031658ba6ea"