35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: B Horn <b@horn.uk>
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Date: Fri, 1 Nov 2024 23:52:06 +0000
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Subject: [PATCH] gettext: Remove variables hooks on module unload
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The gettext module does not entirely cleanup after itself in
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its GRUB_MOD_FINI() leaving a few variables hooks in place.
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It is not possible to unload gettext module because normal
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module depends on it. Though fix the issues for completeness.
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Fixes: CVE-2025-0622
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Reported-by: B Horn <b@horn.uk>
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Signed-off-by: B Horn <b@horn.uk>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/gettext/gettext.c | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/grub-core/gettext/gettext.c b/grub-core/gettext/gettext.c
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index 631af7a94..465143cb6 100644
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--- a/grub-core/gettext/gettext.c
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+++ b/grub-core/gettext/gettext.c
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@@ -542,6 +542,10 @@ GRUB_MOD_INIT (gettext)
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GRUB_MOD_FINI (gettext)
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{
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+ grub_register_variable_hook ("locale_dir", NULL, NULL);
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+ grub_register_variable_hook ("secondary_locale_dir", NULL, NULL);
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+ grub_register_variable_hook ("lang", NULL, NULL);
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+
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grub_gettext_delete_list (&main_context);
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grub_gettext_delete_list (&secondary_context);
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