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| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2019-05-16 23:31:29 +0200 |
|---|---|---|
| committer | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2019-05-19 08:10:10 +0200 |
| commit | db80fe3866c60dc263b50c4c3724c72e91d6fe04 (patch) | |
| tree | 45cb5c540693e3248bd5660754fb7677c5daf4cd /lib | |
| parent | 226cddbe32f0bc0df92aaaa5500a5c1f4eabf8dc (diff) | |
efi_loader: parameter checks CalculateCrc32()
Not checking the parameters may lead reading or writing from NULL.
Implement the parameter checks prescribed in the UEFI spec.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'lib')
| -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 d3f21f15b7..ce6ca06f75 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -2465,9 +2465,16 @@ static efi_status_t EFIAPI efi_calculate_crc32(const void *data, efi_uintn_t data_size, u32 *crc32_p) { + efi_status_t ret = EFI_SUCCESS; + EFI_ENTRY("%p, %zu", data, data_size); + if (!data || !data_size || !crc32_p) { + ret = EFI_INVALID_PARAMETER; + goto out; + } *crc32_p = crc32(0, data, data_size); - return EFI_EXIT(EFI_SUCCESS); +out: + return EFI_EXIT(ret); } /** |