grub: patch CVE-2024-45775

Cherry-pick patch mentioning this CVE.

(From OE-Core rev: 0ae686de6aefb10d961cd8965dba8a02d1c977c6)

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/recipes-bsp/grub/files/CVE-2024-45775.patch

@@ -0,0 +1,38 @@
+From 05be856a8c3aae41f5df90cab7796ab7ee34b872 Mon Sep 17 00:00:00 2001
+From: Lidong Chen <lidong.chen@oracle.com>
+Date: Fri, 22 Nov 2024 06:27:55 +0000
+Subject: [PATCH] commands/extcmd: Missing check for failed allocation
+
+The grub_extcmd_dispatcher() calls grub_arg_list_alloc() to allocate
+a grub_arg_list struct but it does not verify the allocation was successful.
+In case of failed allocation the NULL state pointer can be accessed in
+parse_option() through grub_arg_parse() which may lead to a security issue.
+
+Fixes: CVE-2024-45775
+
+Reported-by: Nils Langius <nils@langius.de>
+Signed-off-by: Lidong Chen <lidong.chen@oracle.com>
+Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
+Reviewed-by: Alec Brown <alec.r.brown@oracle.com>
+
+CVE: CVE-2024-45775
+Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/commit/?id=05be856a8c3aae41f5df90cab7796ab7ee34b872]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ grub-core/commands/extcmd.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/grub-core/commands/extcmd.c b/grub-core/commands/extcmd.c
+index 90a5ca24a..c236be13a 100644
+--- a/grub-core/commands/extcmd.c
++++ b/grub-core/commands/extcmd.c
+@@ -49,6 +49,9 @@ grub_extcmd_dispatcher (struct grub_command *cmd, int argc, char **args,
+     }
+ 
+   state = grub_arg_list_alloc (ext, argc, args);
++  if (state == NULL)
++    return grub_errno;
++
+   if (grub_arg_parse (ext, argc, args, state, &new_args, &new_argc))
+     {
+       context.state = state;

meta/recipes-bsp/grub/grub2.inc

@@ -25,6 +25,7 @@ SRC_URI = "${GNU_MIRROR}/grub/grub-${PV}.tar.gz \
            file://CVE-2024-45783.patch \
            file://CVE-2025-0624.patch \
            file://CVE-2024-45774.patch \
+           file://CVE-2024-45775.patch \
 "
 
 SRC_URI[sha256sum] = "b30919fa5be280417c17ac561bb1650f60cfb80cc6237fa1e2b6f56154cb9c91"