From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Sat, 17 Feb 2018 23:08:00 +0000 (+0100)
Subject: efi_loader: check parameter in InstallConfigurationTable
X-Git-Tag: v2018.05-rc2~45^2~42
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=eb68b4ef31cd7d0fe08becda7ac1e56b45f9054a;p=oweals%2Fu-boot.git

efi_loader: check parameter in InstallConfigurationTable

Check that parameter guid is not NULL. This avoids a possible NULL
pointer exception.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
---

diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 3cee8d607c..9ca2e8161e 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -1333,6 +1333,9 @@ efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table
 {
 	int i;
 
+	if (!guid)
+		return EFI_INVALID_PARAMETER;
+
 	/* Check for guid override */
 	for (i = 0; i < systab.nr_tables; i++) {
 		if (!guidcmp(guid, &efi_conf_table[i].guid)) {