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grub: add a fix a NULL pointer dereference in gnulib

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This change adds a fix for a NULL pointer dereference of state
in 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: 37900e0b112bfd66ae61c03470fd32f77dee1aac)

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>
This commit is contained in:
Marta Rybczynska
2022-02-18 11:05:18 +01:00
committed by Richard Purdie
parent e1122f6dad
commit ab977b3f49
2 changed files with 53 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

52
meta/recipes-bsp/grub/files/0010-gnulib-argp-help-Fix-dereference-of-a-possibly-NULL-.patch Normal file
View File

@@ -0,0 +1,52 @@
From eaf9da8b5f8349c51cfc89dd8e39a1a61f89790a 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>
Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/commit/?id=3a37bf120a9194c373257c70175cdb5b337bc107]
Signed-off-by: Marta Rybczynska <marta.rybczynska@huawei.com>
---
conf/Makefile.extra-dist | 1 +
.../lib/gnulib-patches/fix-null-state-deref.patch | 12 ++++++++++++
2 files changed, 13 insertions(+)
create mode 100644 grub-core/lib/gnulib-patches/fix-null-state-deref.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);

1
meta/recipes-bsp/grub/grub2.inc
View File

@@ -56,6 +56,7 @@ SRC_URI = "${GNU_MIRROR}/grub/grub-${PV}.tar.gz \
file://0007-kern-efi-mm-Fix-possible-NULL-pointer-dereference.patch \
file://0008-gnulib-regexec-Resolve-unused-variable.patch \
file://0009-gnulib-regcomp-Fix-uninitialized-token-structure.patch \
file://0010-gnulib-argp-help-Fix-dereference-of-a-possibly-NULL-.patch \
"
SRC_URI[md5sum] = "5ce674ca6b2612d8939b9e6abed32934"
SRC_URI[sha256sum] = "f10c85ae3e204dbaec39ae22fa3c5e99f0665417e91c2cb49b7e5031658ba6ea"