diff options
| author | Heinrich Schuchardt | 2018-07-02 12:53:55 +0200 |
|---|---|---|
| committer | Alexander Graf | 2018-07-25 14:59:44 +0200 |
| commit | 1fcb7ea28400aa69e157dc4b19c9667e96d3a033 (patch) | |
| tree | d4b7e87306d12acf0fea25c237488ea6f40e25bf /lib/efi_loader/efi_boottime.c | |
| parent | 8e835554b36b57a32a59de643056723a01525c3b (diff) | |
efi_loader: check map_key in ExitBootServices
The UEFI spec requires that the memory map key is checked in
ExitBootServices().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'lib/efi_loader/efi_boottime.c')
| -rw-r--r-- | lib/efi_loader/efi_boottime.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index 86cb9ba479a..6bd64b9df9c 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -1854,6 +1854,10 @@ static efi_status_t EFIAPI efi_exit_boot_services(efi_handle_t image_handle, EFI_ENTRY("%p, %ld", image_handle, map_key); + /* Check that the caller has read the current memory map */ + if (map_key != efi_memory_map_key) + return EFI_INVALID_PARAMETER; + /* Make sure that notification functions are not called anymore */ efi_tpl = TPL_HIGH_LEVEL; |