From: B Horn <b...@horn.uk>
The gettext module does not entirely cleanup after itself in
its GRUB_MOD_FINI() leaving a few variables hooks in place.
It is not possible to unload gettext module because normal
module depends on it. Though fix the issues for completeness.
Fixes: CVE-2025-0622
Reported-by: B Horn <b...@horn.uk>
Signed-off-by: B Horn <b...@horn.uk>
Reviewed-by: Daniel Kiper <daniel.ki...@oracle.com>
---
grub-core/gettext/gettext.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/grub-core/gettext/gettext.c b/grub-core/gettext/gettext.c
index 7a1c14e4f..e4f4f8ee6 100644
--- a/grub-core/gettext/gettext.c
+++ b/grub-core/gettext/gettext.c
@@ -535,6 +535,10 @@ GRUB_MOD_INIT (gettext)
GRUB_MOD_FINI (gettext)
{
+ grub_register_variable_hook ("locale_dir", NULL, NULL);
+ grub_register_variable_hook ("secondary_locale_dir", NULL, NULL);
+ grub_register_variable_hook ("lang", NULL, NULL);
+
grub_gettext_delete_list (&main_context);
grub_gettext_delete_list (&secondary_context);
--
2.11.0
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