diff options
| -rw-r--r-- | src/vnet/ipsec/esp_encrypt.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/vnet/ipsec/esp_encrypt.c b/src/vnet/ipsec/esp_encrypt.c index 186e122793d..6170603ded1 100644 --- a/src/vnet/ipsec/esp_encrypt.c +++ b/src/vnet/ipsec/esp_encrypt.c @@ -114,7 +114,11 @@ esp_add_footer_and_icv (vlib_buffer_t * b, u8 block_size, u8 icv_sz, } if (pad_bytes) - clib_memcpy_fast ((u8 *) f - pad_bytes, pad_data, pad_bytes); + { + ASSERT (pad_bytes <= ESP_MAX_BLOCK_SIZE); + pad_bytes = clib_min (ESP_MAX_BLOCK_SIZE, pad_bytes); + clib_memcpy_fast ((u8 *) f - pad_bytes, pad_data, pad_bytes); + } f->pad_length = pad_bytes; b->current_length = new_length + icv_sz; |