From a95343b8d3db894681dd427bc60077abc891aecc Mon Sep 17 00:00:00 2001 From: Jonathan Gray Date: Sun, 12 Mar 2017 19:26:07 +1100 Subject: [PATCH] efi_loader: check CreateEvent() parameters Add some of the invalid parameter checks described in the UEFI specification for CreateEvent(). This does not include checking the validity of the type and tpl parameters. Signed-off-by: Jonathan Gray Acked-By: Heinrich Schuchardt [agraf: fix checkpatch.pl indent warning] Signed-off-by: Alexander Graf --- lib/efi_loader/efi_boottime.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index eb5946a959..44bcbb1455 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -189,6 +189,16 @@ static efi_status_t EFIAPI efi_create_event( return EFI_EXIT(EFI_OUT_OF_RESOURCES); } + if (event == NULL) + return EFI_EXIT(EFI_INVALID_PARAMETER); + + if ((type & EVT_NOTIFY_SIGNAL) && (type & EVT_NOTIFY_WAIT)) + return EFI_EXIT(EFI_INVALID_PARAMETER); + + if ((type & (EVT_NOTIFY_SIGNAL|EVT_NOTIFY_WAIT)) && + notify_function == NULL) + return EFI_EXIT(EFI_INVALID_PARAMETER); + efi_event.type = type; efi_event.notify_tpl = notify_tpl; efi_event.notify_function = notify_function; -- 2.39.2