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From 778a3fffd19229e5650a1abfb06c974949991cd4 Mon Sep 17 00:00:00 2001
From: Paulo Flabiano Smorigo <pfsmorigo@canonical.com>
Date: Mon, 30 Nov 2020 10:36:00 -0300
Subject: [PATCH] loader/xnu: Check if pointer is NULL before using it
Fixes: CID 73654
Signed-off-by: Paulo Flabiano Smorigo <pfsmorigo@canonical.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/commit/?id=7c8a2b5d1421a0f2a33d33531f7561f3da93b844]
Signed-off-by: Marta Rybczynska <marta.rybczynska@huawei.com>
---
grub-core/loader/xnu.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/grub-core/loader/xnu.c b/grub-core/loader/xnu.c
index 39ceff8..adc048c 100644
--- a/grub-core/loader/xnu.c
+++ b/grub-core/loader/xnu.c
@@ -667,6 +667,9 @@ grub_xnu_load_driver (char *infoplistname, grub_file_t binaryfile,
char *name, *nameend;
int namelen;
+ if (infoplistname == NULL)
+ return grub_error (GRUB_ERR_BAD_FILENAME, N_("missing p-list filename"));
+
name = get_name_ptr (infoplistname);
nameend = grub_strchr (name, '/');
@@ -698,10 +701,7 @@ grub_xnu_load_driver (char *infoplistname, grub_file_t binaryfile,
else
macho = 0;
- if (infoplistname)
- infoplist = grub_file_open (infoplistname, GRUB_FILE_TYPE_XNU_INFO_PLIST);
- else
- infoplist = 0;
+ infoplist = grub_file_open (infoplistname, GRUB_FILE_TYPE_XNU_INFO_PLIST);
grub_errno = GRUB_ERR_NONE;
if (infoplist)
{
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