From e8ab5a1a9e2889eb59d1fa494ba441a53698dcd2 Mon Sep 17 00:00:00 2001
From: Rob Clark <rclark@redhat.com>
Date: Wed, 19 Jul 2017 15:47:41 -0400
Subject: [PATCH 050/227] Fix a segfault in lsefi
when protocols_per_handle returns error, we can't use the pointers we
passed to it, and that includes trusting num_protocols.
Signed-off-by: Peter Jones <pjones@redhat.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
grub-core/commands/efi/lsefi.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/grub-core/commands/efi/lsefi.c b/grub-core/commands/efi/lsefi.c
index d901c389263..d1ce99af438 100644
--- a/grub-core/commands/efi/lsefi.c
+++ b/grub-core/commands/efi/lsefi.c
@@ -109,8 +109,10 @@ grub_cmd_lsefi (grub_command_t cmd __attribute__ ((unused)),
status = efi_call_3 (grub_efi_system_table->boot_services->protocols_per_handle,
handle, &protocols, &num_protocols);
- if (status != GRUB_EFI_SUCCESS)
+ if (status != GRUB_EFI_SUCCESS) {
grub_printf ("Unable to retrieve protocols\n");
+ continue;
+ }
for (j = 0; j < num_protocols; j++)
{
for (k = 0; k < ARRAY_SIZE (known_protocols); k++)
--
2.15.0