diff options
Diffstat (limited to 'firmware/bdb/bdb.c')
| -rw-r--r-- | firmware/bdb/bdb.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/firmware/bdb/bdb.c b/firmware/bdb/bdb.c index 663b43ff..4ebf7936 100644 --- a/firmware/bdb/bdb.c +++ b/firmware/bdb/bdb.c @@ -318,7 +318,7 @@ int bdb_verify(const void *buf, size_t size, const uint8_t *bdb_key_digest) const struct bdb_data *data; const void *oem; uint8_t digest[BDB_SHA256_DIGEST_SIZE]; - int bdb_digest_mismatch; + int bdb_digest_mismatch = -1; /* Make sure buffer doesn't wrap around address space */ if (end < (const uint8_t *)buf) @@ -342,7 +342,9 @@ int bdb_verify(const void *buf, size_t size, const uint8_t *bdb_key_digest) VB2_HASH_SHA256, digest, BDB_SHA256_DIGEST_SIZE)) return BDB_ERROR_DIGEST; - bdb_digest_mismatch = memcmp(digest, bdb_key_digest, sizeof(digest)); + if (bdb_key_digest) + bdb_digest_mismatch = memcmp(digest, + bdb_key_digest, sizeof(digest)); /* Make sure OEM area 0 fits */ oem = bdb_get_oem_area_0(buf); |