From: Marta Rybczynska <rybczyn...@gmail.com> This patch adds a fix for a NULL pointer dereference in grub's script/execute. It is a part of a security series [1].
[1] https://lists.gnu.org/archive/html/grub-devel/2021-03/msg00007.html Signed-off-by: Marta Rybczynska <marta.rybczyn...@huawei.com> Signed-off-by: Steve Sakoman <st...@sakoman.com> --- ...ix-NULL-dereference-in-grub_script_e.patch | 28 +++++++++++++++++++ meta/recipes-bsp/grub/grub2.inc | 1 + 2 files changed, 29 insertions(+) create mode 100644 meta/recipes-bsp/grub/files/0044-script-execute-Fix-NULL-dereference-in-grub_script_e.patch diff --git a/meta/recipes-bsp/grub/files/0044-script-execute-Fix-NULL-dereference-in-grub_script_e.patch b/meta/recipes-bsp/grub/files/0044-script-execute-Fix-NULL-dereference-in-grub_script_e.patch new file mode 100644 index 0000000000..b279222fff --- /dev/null +++ b/meta/recipes-bsp/grub/files/0044-script-execute-Fix-NULL-dereference-in-grub_script_e.patch @@ -0,0 +1,28 @@ +From f5fb56954e5926ced42a980c3e0842ffd5fea2aa Mon Sep 17 00:00:00 2001 +From: Daniel Axtens <d...@axtens.net> +Date: Fri, 3 Apr 2020 23:05:13 +1100 +Subject: [PATCH] script/execute: Fix NULL dereference in + grub_script_execute_cmdline() + +Signed-off-by: Daniel Axtens <d...@axtens.net> +Reviewed-by: Daniel Kiper <daniel.ki...@oracle.com> + +Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/commit/?id=41ae93b2e6c75453514629bcfe684300e3aec0ce] +Signed-off-by: Marta Rybczynska <marta.rybczyn...@huawei.com> +--- + grub-core/script/execute.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/grub-core/script/execute.c b/grub-core/script/execute.c +index 7e028e1..5ea2aef 100644 +--- a/grub-core/script/execute.c ++++ b/grub-core/script/execute.c +@@ -940,7 +940,7 @@ grub_script_execute_cmdline (struct grub_script_cmd *cmd) + struct grub_script_argv argv = { 0, 0, 0 }; + + /* Lookup the command. */ +- if (grub_script_arglist_to_argv (cmdline->arglist, &argv) || ! argv.args[0]) ++ if (grub_script_arglist_to_argv (cmdline->arglist, &argv) || ! argv.args || ! argv.args[0]) + return grub_errno; + + for (i = 0; i < argv.argc; i++) diff --git a/meta/recipes-bsp/grub/grub2.inc b/meta/recipes-bsp/grub/grub2.inc index 2f230065b2..84b8b8d1be 100644 --- a/meta/recipes-bsp/grub/grub2.inc +++ b/meta/recipes-bsp/grub/grub2.inc @@ -90,6 +90,7 @@ SRC_URI = "${GNU_MIRROR}/grub/grub-${PV}.tar.gz \ file://0041-util-grub-install-Fix-NULL-pointer-dereferences.patch \ file://0042-util-grub-editenv-Fix-incorrect-casting-of-a-signed-.patch \ file://0043-util-glue-efi-Fix-incorrect-use-of-a-possibly-negati.patch \ + file://0044-script-execute-Fix-NULL-dereference-in-grub_script_e.patch \ " SRC_URI[md5sum] = "5ce674ca6b2612d8939b9e6abed32934" SRC_URI[sha256sum] = "f10c85ae3e204dbaec39ae22fa3c5e99f0665417e91c2cb49b7e5031658ba6ea" -- 2.25.1
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