From 8b3a95655b4391122e7b0315d8cc6f876caf8183 Mon Sep 17 00:00:00 2001 From: Daniel Kiper Date: Thu, 25 Feb 2021 18:35:01 +0100 Subject: [PATCH] util/grub-install: Fix NULL pointer dereferences Two grub_device_open() calls does not have associated NULL checks for returned values. Fix that and appease the Coverity. Fixes: CID 314583 Signed-off-by: Daniel Kiper Reviewed-by: Javier Martinez Canillas Signed-off-by: Stefan Sørensen --- util/grub-install.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/util/grub-install.c b/util/grub-install.c index a82725f..367350f 100644 --- a/util/grub-install.c +++ b/util/grub-install.c @@ -1775,6 +1775,8 @@ main (int argc, char *argv[]) fill_core_services (core_services); ins_dev = grub_device_open (install_drive); + if (ins_dev == NULL) + grub_util_error ("%s", grub_errmsg); bless (ins_dev, core_services, 0); @@ -1875,6 +1877,8 @@ main (int argc, char *argv[]) fill_core_services(core_services); ins_dev = grub_device_open (install_drive); + if (ins_dev == NULL) + grub_util_error ("%s", grub_errmsg); bless (ins_dev, boot_efi, 1); if (!removable && update_nvram) -- 2.14.2