grub: patch CVE-2024-45783

Cherry-pick patch mentioning this CVE.

(From OE-Core rev: 662d705f0f947eef2eab5f72764d421698ca0588)

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 40 insertions, 0 deletions

diff --git a/meta/recipes-bsp/grub/files/CVE-2024-45783.patch b/meta/recipes-bsp/grub/files/CVE-2024-45783.patch
new file mode 100644
index 0000000000..99c769961b
--- /dev/null
+++ b/meta/recipes-bsp/grub/files/CVE-2024-45783.patch
@@ -0,0 +1,39 @@
+From f7c070a2e28dfab7137db0739fb8db1dc02d8898 Mon Sep 17 00:00:00 2001
+From: B Horn <b@horn.uk>
+Date: Sun, 12 May 2024 06:22:51 +0100
+Subject: [PATCH] fs/hfsplus: Set a grub_errno if mount fails
+
+It was possible for mount to fail but not set grub_errno. This led to
+a possible double decrement of the module reference count if the NULL
+page was mapped.
+
+Fixing in general as a similar bug was fixed in commit 61b13c187
+(fs/hfsplus: Set grub_errno to prevent NULL pointer access) and there
+are likely more variants around.
+
+Fixes: CVE-2024-45783
+
+Reported-by: B Horn <b@horn.uk>
+Signed-off-by: B Horn <b@horn.uk>
+Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
+
+CVE: CVE-2024-45783
+Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/commit/?id=f7c070a2e28dfab7137db0739fb8db1dc02d8898]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ grub-core/fs/hfsplus.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/grub-core/fs/hfsplus.c b/grub-core/fs/hfsplus.c
+index 295822f69..de71fd486 100644
+--- a/grub-core/fs/hfsplus.c
++++ b/grub-core/fs/hfsplus.c
+@@ -405,7 +405,7 @@ grub_hfsplus_mount (grub_disk_t disk)
+ 
+  fail:
+ 
+-  if (grub_errno == GRUB_ERR_OUT_OF_RANGE)
++  if (grub_errno == GRUB_ERR_OUT_OF_RANGE || grub_errno == GRUB_ERR_NONE)
+     grub_error (GRUB_ERR_BAD_FS, "not a HFS+ filesystem");
+ 
+   grub_free (data);
diff --git a/meta/recipes-bsp/grub/grub2.inc b/meta/recipes-bsp/grub/grub2.inc
index 84b28c7b9f..8b638c58c0 100644
--- a/meta/recipes-bsp/grub/grub2.inc
+++ b/meta/recipes-bsp/grub/grub2.inc
@@ -22,6 +22,7 @@ SRC_URI = "${GNU_MIRROR}/grub/grub-${PV}.tar.gz \
            file://CVE-2024-45781.patch \
            file://CVE-2024-45782_CVE-2024-56737.patch \
            file://CVE-2024-45780.patch \
+           file://CVE-2024-45783.patch \
 "
 
 SRC_URI[sha256sum] = "b30919fa5be280417c17ac561bb1650f60cfb80cc6237fa1e2b6f56154cb9c91"