From 470dfa50da799720ed6513b89b9237064415cb73 Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Sun, 5 May 2019 16:55:06 +0200 Subject: [PATCH] efi_loader: LoadImage() check source size If the size of the source buffer is 0, return EFI_LOAD_ERROR. (UEFI SCT II 2017: 3.4.1 LoadImage() - 5.1.4.1.6) Signed-off-by: Heinrich Schuchardt --- lib/efi_loader/efi_boottime.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index ef9e378189..89966a2f12 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -1781,6 +1781,10 @@ efi_status_t EFIAPI efi_load_image(bool boot_policy, if (ret != EFI_SUCCESS) goto error; } else { + if (!source_size) { + ret = EFI_LOAD_ERROR; + goto error; + } dest_buffer = source_buffer; } /* split file_path which contains both the device and file parts */ -- 2.39.5