From 7c8a2b5d1421a0f2a33d33531f7561f3da93b844 Mon Sep 17 00:00:00 2001
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From: Paulo Flabiano Smorigo <pfsmorigo@canonical.com>
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Date: Mon, 30 Nov 2020 10:36:00 -0300
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Subject: [PATCH] loader/xnu: Check if pointer is NULL before using it
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Fixes: CID 73654
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Signed-off-by: Paulo Flabiano Smorigo <pfsmorigo@canonical.com>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
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---
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grub-core/loader/xnu.c | 8 ++++----
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1 file changed, 4 insertions(+), 4 deletions(-)
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diff --git a/grub-core/loader/xnu.c b/grub-core/loader/xnu.c
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index 1a590db..1c0cf6a 100644
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--- a/grub-core/loader/xnu.c
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+++ b/grub-core/loader/xnu.c
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@@ -670,6 +670,9 @@ grub_xnu_load_driver (char *infoplistname, grub_file_t binaryfile,
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char *name, *nameend;
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int namelen;
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+ if (infoplistname == NULL)
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+ return grub_error (GRUB_ERR_BAD_FILENAME, N_("missing p-list filename"));
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+
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name = get_name_ptr (infoplistname);
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nameend = grub_strchr (name, '/');
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@@ -701,10 +704,7 @@ grub_xnu_load_driver (char *infoplistname, grub_file_t binaryfile,
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else
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macho = 0;
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- if (infoplistname)
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- infoplist = grub_file_open (infoplistname, GRUB_FILE_TYPE_XNU_INFO_PLIST);
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- else
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- infoplist = 0;
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+ infoplist = grub_file_open (infoplistname, GRUB_FILE_TYPE_XNU_INFO_PLIST);
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grub_errno = GRUB_ERR_NONE;
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if (infoplist)
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{
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--
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2.14.2
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