From: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Date: Fri, 27 Feb 2015 22:31:43 +0000 (-0500)
Subject: bootctl: avoid NULL pointer dereference
X-Git-Tag: v219.0~543
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=1a1db450e54c549382e8466130e63b91ae78b552;p=elogind.git

bootctl: avoid NULL pointer dereference
---

diff --git a/src/boot/bootctl.c b/src/boot/bootctl.c
index bd55fa95b..ae467ca35 100644
--- a/src/boot/bootctl.c
+++ b/src/boot/bootctl.c
@@ -1329,8 +1329,8 @@ static int bootctl_main(int argc, char*argv[]) {
                 efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderFirmwareType", &fw_type);
                 efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderFirmwareInfo", &fw_info);
                 efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderInfo", &loader);
-                efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderImageIdentifier", &loader_path);
-                efi_tilt_backslashes(loader_path);
+                if (efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderImageIdentifier", &loader_path) > 0)
+                        efi_tilt_backslashes(loader_path);
                 efi_loader_get_device_part_uuid(&loader_part_uuid);
 
                 printf("System:\n");