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From 34824806ac6302f91e8cabaa41308eaced25725f Mon Sep 17 00:00:00 2001
From: B Horn <b@horn.uk>
Date: Thu, 18 Apr 2024 20:29:39 +0100
Subject: [PATCH] commands/minicmd: Block the dump command in lockdown mode
The dump enables a user to read memory which should not be possible
in lockdown mode.
Fixes: CVE-2025-1118
Reported-by: B Horn <b@horn.uk>
Reported-by: Jonathan Bar Or <jonathanbaror@gmail.com>
Signed-off-by: B Horn <b@horn.uk>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
CVE: CVE-2025-1118
Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/commit/?id=34824806ac6302f91e8cabaa41308eaced25725f]
Signed-off-by: Peter Marko <peter.marko@siemens.com>
---
grub-core/commands/minicmd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/grub-core/commands/minicmd.c b/grub-core/commands/minicmd.c
index 286290866..8c5ee3e60 100644
--- a/grub-core/commands/minicmd.c
+++ b/grub-core/commands/minicmd.c
@@ -203,8 +203,8 @@ GRUB_MOD_INIT(minicmd)
grub_register_command ("help", grub_mini_cmd_help,
0, N_("Show this message."));
cmd_dump =
- grub_register_command ("dump", grub_mini_cmd_dump,
- N_("ADDR [SIZE]"), N_("Show memory contents."));
+ grub_register_command_lockdown ("dump", grub_mini_cmd_dump,
+ N_("ADDR [SIZE]"), N_("Show memory contents."));
cmd_rmmod =
grub_register_command ("rmmod", grub_mini_cmd_rmmod,
N_("MODULE"), N_("Remove a module."));
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