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efi_loader: check parameters EFI_FILE_PROTOCOL.GetInfo()
Check the parameters of EFI_FILE_PROTOCOL.GetInfo() to avoid possible NULL dereference. Check the buffer size for EFI_FILE_SYSTEM_INFO. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
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@ -596,6 +596,12 @@ static efi_status_t EFIAPI efi_file_getinfo(struct efi_file_handle *file,
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EFI_ENTRY("%p, %pUl, %p, %p", file, info_type, buffer_size, buffer);
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if (!file || !info_type || !buffer_size ||
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(*buffer_size && !buffer)) {
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ret = EFI_INVALID_PARAMETER;
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goto error;
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}
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if (!guidcmp(info_type, &efi_file_info_guid)) {
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struct efi_file_info *info = buffer;
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char *filename = basename(fh);
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