From 997c2ce5cf9e669ca2d6713954e50af29ceea914 Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Sat, 15 Jun 2019 12:52:35 +0200 Subject: [PATCH] efi_loader: QueryMode() check parameters Check the parameters of EFI_GRAPHICS_OUTPUT_PROTOCOL.QueryMode(). Signed-off-by: Heinrich Schuchardt --- lib/efi_loader/efi_gop.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/lib/efi_loader/efi_gop.c b/lib/efi_loader/efi_gop.c index 9428c3b83c..c44a1cfc47 100644 --- a/lib/efi_loader/efi_gop.c +++ b/lib/efi_loader/efi_gop.c @@ -41,14 +41,21 @@ static efi_status_t EFIAPI gop_query_mode(struct efi_gop *this, u32 mode_number, struct efi_gop_mode_info **info) { struct efi_gop_obj *gopobj; + efi_status_t ret = EFI_SUCCESS; EFI_ENTRY("%p, %x, %p, %p", this, mode_number, size_of_info, info); + if (!this || !size_of_info || !info || mode_number) { + ret = EFI_INVALID_PARAMETER; + goto out; + } + gopobj = container_of(this, struct efi_gop_obj, ops); *size_of_info = sizeof(gopobj->info); *info = &gopobj->info; - return EFI_EXIT(EFI_SUCCESS); +out: + return EFI_EXIT(ret); } static efi_status_t EFIAPI gop_set_mode(struct efi_gop *this, u32 mode_number) -- 2.25.1