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| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2019-05-17 12:47:17 +0200 |
|---|---|---|
| committer | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2019-05-19 08:10:10 +0200 |
| commit | 1344f7d0f61d94fe475aeadb000ac6cafccd3920 (patch) | |
| tree | e59a9e5bdab3ecc9bd4575bd2bb4da680caa89bc | |
| parent | db80fe3866c60dc263b50c4c3724c72e91d6fe04 (diff) | |
efi_loader: GetNextMonotonicCount() check parameter
Do not write to address indicated by NULL pointer.
UEFI SCT II 2.6 (2017), 3.6.5 GetNextMonotonicCount(), 5.1.5.5.1
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
| -rw-r--r-- | lib/efi_loader/efi_boottime.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index ce6ca06f75..971bd5ffa3 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -1916,10 +1916,17 @@ static efi_status_t EFIAPI efi_exit_boot_services(efi_handle_t image_handle, static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count) { static uint64_t mono; + efi_status_t ret; EFI_ENTRY("%p", count); + if (!count) { + ret = EFI_INVALID_PARAMETER; + goto out; + } *count = mono++; - return EFI_EXIT(EFI_SUCCESS); + ret = EFI_SUCCESS; +out: + return EFI_EXIT(ret); } /** |