[PATCH 1/1] efi_loader: add missing check in FMP.GetImageInfo()

[Heinrich Schuchardt]

The UEFI 2.11 specification, chapter 23.1.3 requires
EFI_FIRMWARE_MANAGEMENT_PROTOCOL.GetImageInfo() to return
EFI_INVALID_PARAMETER if *ImageInfoSize is not too small
and ImageInfo is NULL.

Fixes: f27c20148511 ("efi_loader: add firmware management protocol for FIT 
image")
Signed-off-by: Heinrich Schuchardt <heinrich.schucha...@canonical.com>
---
 lib/efi_loader/efi_firmware.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/efi_loader/efi_firmware.c b/lib/efi_loader/efi_firmware.c
index 75501e21557..216df83de67 100644
--- a/lib/efi_loader/efi_firmware.c
+++ b/lib/efi_loader/efi_firmware.c
@@ -332,6 +332,8 @@ static efi_status_t efi_fill_image_desc_array(
 
                return EFI_BUFFER_TOO_SMALL;
        }
+       if (!image_info)
+               return EFI_INVALID_PARAMETER;
        *image_info_size = total_size;
 
        ret = efi_gen_capsule_guids();
-- 
2.48.1