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- From 9c5565135f12400a925ee901b25984e7af4442f5 Mon Sep 17 00:00:00 2001
- From: Javier Martinez Canillas <javierm@redhat.com>
- Date: Wed, 24 Feb 2021 14:44:38 +0100
- Subject: [PATCH] loader/xnu: Don't allow loading extension and packages when
- locked down
- The shim_lock verifier validates the XNU kernels but no its extensions
- and packages. Prevent these to be loaded when the GRUB is locked down.
- Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
- Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
- Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
- ---
- grub-core/loader/xnu.c | 31 +++++++++++++++++--------------
- 1 file changed, 17 insertions(+), 14 deletions(-)
- diff --git a/grub-core/loader/xnu.c b/grub-core/loader/xnu.c
- index 9ae4ceb..44fd5a9 100644
- --- a/grub-core/loader/xnu.c
- +++ b/grub-core/loader/xnu.c
- @@ -1485,20 +1485,23 @@ GRUB_MOD_INIT(xnu)
- N_("Load XNU image."));
- cmd_kernel64 = grub_register_command ("xnu_kernel64", grub_cmd_xnu_kernel64,
- 0, N_("Load 64-bit XNU image."));
- - cmd_mkext = grub_register_command ("xnu_mkext", grub_cmd_xnu_mkext, 0,
- - N_("Load XNU extension package."));
- - cmd_kext = grub_register_command ("xnu_kext", grub_cmd_xnu_kext, 0,
- - N_("Load XNU extension."));
- - cmd_kextdir = grub_register_command ("xnu_kextdir", grub_cmd_xnu_kextdir,
- - /* TRANSLATORS: OSBundleRequired is a
- - variable name in xnu extensions
- - manifests. It behaves mostly like
- - GNU/Linux runlevels.
- - */
- - N_("DIRECTORY [OSBundleRequired]"),
- - /* TRANSLATORS: There are many extensions
- - in extension directory. */
- - N_("Load XNU extension directory."));
- + cmd_mkext = grub_register_command_lockdown ("xnu_mkext", grub_cmd_xnu_mkext, 0,
- + N_("Load XNU extension package."));
- + cmd_kext = grub_register_command_lockdown ("xnu_kext", grub_cmd_xnu_kext, 0,
- + N_("Load XNU extension."));
- + cmd_kextdir = grub_register_command_lockdown ("xnu_kextdir", grub_cmd_xnu_kextdir,
- + /*
- + * TRANSLATORS: OSBundleRequired is
- + * a variable name in xnu extensions
- + * manifests. It behaves mostly like
- + * GNU/Linux runlevels.
- + */
- + N_("DIRECTORY [OSBundleRequired]"),
- + /*
- + * TRANSLATORS: There are many extensions
- + * in extension directory.
- + */
- + N_("Load XNU extension directory."));
- cmd_ramdisk = grub_register_command ("xnu_ramdisk", grub_cmd_xnu_ramdisk, 0,
- /* TRANSLATORS: ramdisk here isn't identifier. It can be translated. */
- N_("Load XNU ramdisk. "
- --
- 2.14.2
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