diff options
| -rw-r--r-- | lib/efi_loader/efi_var_mem.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/efi_loader/efi_var_mem.c b/lib/efi_loader/efi_var_mem.c index d6b65aed12..5fa7dcb8d3 100644 --- a/lib/efi_loader/efi_var_mem.c +++ b/lib/efi_loader/efi_var_mem.c @@ -177,6 +177,10 @@ efi_status_t __efi_runtime efi_var_mem_ins( u64 __efi_runtime efi_var_mem_free(void) { + if (efi_var_buf->length + sizeof(struct efi_var_entry) >= + EFI_VAR_BUF_SIZE) + return 0; + return EFI_VAR_BUF_SIZE - efi_var_buf->length - sizeof(struct efi_var_entry); } |