diff options
| -rw-r--r-- | src/lib/dev.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/lib/dev.c b/src/lib/dev.c index 88d6c5f6..845d07a8 100644 --- a/src/lib/dev.c +++ b/src/lib/dev.c @@ -347,8 +347,14 @@ static int crc_check(struct ssm_pk_buff * spb, size_t head_skip) { uint32_t crc; - uint8_t * head = ssm_pk_buff_head(spb) + head_skip; - uint8_t * tail = ssm_pk_buff_pop_tail(spb, CRCLEN); + uint8_t * head; + uint8_t * tail; + + if (ssm_pk_buff_len(spb) < head_skip + CRCLEN) + return 1; + + head = ssm_pk_buff_head(spb) + head_skip; + tail = ssm_pk_buff_pop_tail(spb, CRCLEN); mem_hash(HASH_CRC32, &crc, head, tail - head); |