53 lines
1.5 KiB
Diff
53 lines
1.5 KiB
Diff
From 29c89e27805f7a6a22bce11ed9bb430e19c972a9 Mon Sep 17 00:00:00 2001
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From: Colin Watson <cjwatson@ubuntu.com>
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Date: Tue, 23 Oct 2012 10:40:49 -0400
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Subject: [PATCH 449/482] Don't allow insmod when secure boot is enabled.
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References: fate#314485
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Patch-Mainline: no
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v2:
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Use grub_efi_get_secureboot to get secure boot status
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Signed-off-by: Michael Chang <mchang@suse.com>
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---
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grub-core/kern/dl.c | 17 +++++++++++++++++
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grub-core/kern/efi/efi.c | 28 ++++++++++++++++++++++++++++
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include/grub/efi/efi.h | 1 +
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3 files changed, 46 insertions(+)
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Index: grub-2.04/grub-core/kern/dl.c
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===================================================================
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--- grub-2.04.orig/grub-core/kern/dl.c
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+++ grub-2.04/grub-core/kern/dl.c
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@@ -38,6 +38,10 @@
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#define GRUB_MODULES_MACHINE_READONLY
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#endif
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+#ifdef GRUB_MACHINE_EFI
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+#include <grub/efi/sb.h>
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+#endif
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+
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#pragma GCC diagnostic ignored "-Wcast-align"
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@@ -688,6 +692,19 @@ grub_dl_load_file (const char *filename)
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grub_boot_time ("Loading module %s", filename);
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+#ifdef GRUB_MACHINE_EFI
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+ if (grub_efi_get_secureboot () == GRUB_EFI_SECUREBOOT_MODE_ENABLED)
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+ {
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+#if 0
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+ /* This is an error, but grub2-mkconfig still generates a pile of
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+ * insmod commands, so emitting it would be mostly just obnoxious. */
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+ grub_error (GRUB_ERR_ACCESS_DENIED,
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+ "Secure Boot forbids loading module from %s", filename);
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+#endif
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+ return 0;
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+ }
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+#endif
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+
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file = grub_file_open (filename, GRUB_FILE_TYPE_GRUB_MODULE);
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if (! file)
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return 0;
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