grub: patch CVE-2024-45777

Cherry-pick patch mentioning this CVE.

(From OE-Core rev: bfebaeb1705d072eb6b42a6dfe9bff4829a49a33)

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

meta/recipes-bsp/grub/files/CVE-2024-45777.patch

@@ -0,0 +1,57 @@
+From b970a5ed967816bbca8225994cd0ee2557bad515 Mon Sep 17 00:00:00 2001
+From: Lidong Chen <lidong.chen@oracle.com>
+Date: Fri, 22 Nov 2024 06:27:57 +0000
+Subject: [PATCH] gettext: Integer overflow leads to heap OOB write
+
+The size calculation of the translation buffer in
+grub_gettext_getstr_from_position() may overflow
+to 0 leading to heap OOB write. This patch fixes
+the issue by using grub_add() and checking for
+an overflow.
+
+Fixes: CVE-2024-45777
+
+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-2024-45777
+Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/commit/?id=b970a5ed967816bbca8225994cd0ee2557bad515]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ grub-core/gettext/gettext.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/grub-core/gettext/gettext.c b/grub-core/gettext/gettext.c
+index 63bb1ab73..9ffc73428 100644
+--- a/grub-core/gettext/gettext.c
++++ b/grub-core/gettext/gettext.c
+@@ -26,6 +26,7 @@
+ #include <grub/file.h>
+ #include <grub/kernel.h>
+ #include <grub/i18n.h>
++#include <grub/safemath.h>
+ 
+ GRUB_MOD_LICENSE ("GPLv3+");
+ 
+@@ -99,6 +100,7 @@ grub_gettext_getstr_from_position (struct grub_gettext_context *ctx,
+   char *translation;
+   struct string_descriptor desc;
+   grub_err_t err;
++  grub_size_t alloc_sz;
+ 
+   internal_position = (off + position * sizeof (desc));
+ 
+@@ -109,7 +111,10 @@ grub_gettext_getstr_from_position (struct grub_gettext_context *ctx,
+   length = grub_cpu_to_le32 (desc.length);
+   offset = grub_cpu_to_le32 (desc.offset);
+ 
+-  translation = grub_malloc (length + 1);
++  if (grub_add (length, 1, &alloc_sz))
++    return NULL;
++
++  translation = grub_malloc (alloc_sz);
+   if (!translation)
+     return NULL;
+ 

meta/recipes-bsp/grub/grub2.inc

@@ -30,6 +30,7 @@ SRC_URI = "${GNU_MIRROR}/grub/grub-${PV}.tar.gz \
            file://CVE-2025-0622-02.patch \
            file://CVE-2025-0622-03.patch \
            file://CVE-2024-45776.patch \
+           file://CVE-2024-45777.patch \
 "
 
 SRC_URI[sha256sum] = "b30919fa5be280417c17ac561bb1650f60cfb80cc6237fa1e2b6f56154cb9c91"