diff options
Diffstat (limited to 'meta/recipes-bsp/grub/files/CVE-2020-14372_3.patch')
| -rw-r--r-- | meta/recipes-bsp/grub/files/CVE-2020-14372_3.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/meta/recipes-bsp/grub/files/CVE-2020-14372_3.patch b/meta/recipes-bsp/grub/files/CVE-2020-14372_3.patch new file mode 100644 index 0000000000..93fdd2cb1a --- /dev/null +++ b/meta/recipes-bsp/grub/files/CVE-2020-14372_3.patch @@ -0,0 +1,57 @@ +From bfb9c44298aa202c176fef8dc5ea48f9b0e76e5e Mon Sep 17 00:00:00 2001 +From: Javier Martinez Canillas <javierm@redhat.com> +Date: Tue, 2 Feb 2021 19:59:48 +0100 +Subject: [PATCH] kern/lockdown: Set a variable if the GRUB is locked down + +It may be useful for scripts to determine whether the GRUB is locked +down or not. Add the lockdown variable which is set to "y" when the GRUB +is locked down. + +Suggested-by: Dimitri John Ledkov <xnox@ubuntu.com> +Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> +Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com> + +Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/commit/?id=d90367471779c240e002e62edfb6b31fc85b4908] +CVE: CVE-2020-14372 +Signed-off-by: Marta Rybczynska <marta.rybczynska@huawei.com> +--- + docs/grub.texi | 3 +++ + grub-core/kern/lockdown.c | 4 ++++ + 2 files changed, 7 insertions(+) + +diff --git a/docs/grub.texi b/docs/grub.texi +index d778bfb..5e6cace 100644 +--- a/docs/grub.texi ++++ b/docs/grub.texi +@@ -5802,6 +5802,9 @@ The GRUB can be locked down when booted on a secure boot environment, for exampl + if the UEFI secure boot is enabled. On a locked down configuration, the GRUB will + be restricted and some operations/commands cannot be executed. + ++The @samp{lockdown} variable is set to @samp{y} when the GRUB is locked down. ++Otherwise it does not exit. ++ + @node Platform limitations + @chapter Platform limitations + +diff --git a/grub-core/kern/lockdown.c b/grub-core/kern/lockdown.c +index 1e56c0b..0bc70fd 100644 +--- a/grub-core/kern/lockdown.c ++++ b/grub-core/kern/lockdown.c +@@ -18,6 +18,7 @@ + */ + + #include <grub/dl.h> ++#include <grub/env.h> + #include <grub/file.h> + #include <grub/lockdown.h> + #include <grub/verify.h> +@@ -71,6 +72,9 @@ grub_lockdown (void) + lockdown = GRUB_LOCKDOWN_ENABLED; + + grub_verifier_register (&lockdown_verifier); ++ ++ grub_env_set ("lockdown", "y"); ++ grub_env_export ("lockdown"); + } + + int |