0042-commands-setpci-Restrict-setpci-command-when-locked-.patch 1.3 KB

12345678910111213141516171819202122232425262728293031323334353637
  1. From 58b77d4069823b44c5fa916fa8ddfc9c4cd51e02 Mon Sep 17 00:00:00 2001
  2. From: Javier Martinez Canillas <javierm@redhat.com>
  3. Date: Wed, 24 Feb 2021 22:59:59 +0100
  4. Subject: [PATCH] commands/setpci: Restrict setpci command when locked down
  5. This command can set PCI devices register values, which makes it dangerous
  6. in a locked down configuration. Restrict it so can't be used on this setup.
  7. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
  8. Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
  9. Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
  10. ---
  11. grub-core/commands/setpci.c | 8 ++++----
  12. 1 file changed, 4 insertions(+), 4 deletions(-)
  13. diff --git a/grub-core/commands/setpci.c b/grub-core/commands/setpci.c
  14. index d5bc97d..fa2ba7d 100644
  15. --- a/grub-core/commands/setpci.c
  16. +++ b/grub-core/commands/setpci.c
  17. @@ -329,10 +329,10 @@ static grub_extcmd_t cmd;
  18. GRUB_MOD_INIT(setpci)
  19. {
  20. - cmd = grub_register_extcmd ("setpci", grub_cmd_setpci, 0,
  21. - N_("[-s POSITION] [-d DEVICE] [-v VAR] "
  22. - "REGISTER[=VALUE[:MASK]]"),
  23. - N_("Manipulate PCI devices."), options);
  24. + cmd = grub_register_extcmd_lockdown ("setpci", grub_cmd_setpci, 0,
  25. + N_("[-s POSITION] [-d DEVICE] [-v VAR] "
  26. + "REGISTER[=VALUE[:MASK]]"),
  27. + N_("Manipulate PCI devices."), options);
  28. }
  29. GRUB_MOD_FINI(setpci)
  30. --
  31. 2.14.2