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efi_loader: check parameter in InstallConfigurationTable

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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>
This commit is contained in:
Heinrich Schuchardt 2018-02-18 00:08:00 +01:00 committed by Alexander Graf
parent 0fb4169e28
commit eb68b4ef31
1 changed files with 3 additions and 0 deletions
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3
lib/efi_loader/efi_boottime.c
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@ -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)) {