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-rw-r--r--src/vnet/ipsec/esp_encrypt.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/vnet/ipsec/esp_encrypt.c b/src/vnet/ipsec/esp_encrypt.c
index 30c2bf9a8ac..68aeb60885c 100644
--- a/src/vnet/ipsec/esp_encrypt.c
+++ b/src/vnet/ipsec/esp_encrypt.c
@@ -129,7 +129,8 @@ esp_add_footer_and_icv (vlib_main_t *vm, vlib_buffer_t **last, u8 esp_align,
last[0]->current_length + pad_bytes);
u16 tail_sz = sizeof (esp_footer_t) + pad_bytes + icv_sz;
- if (last[0]->current_length + tail_sz > buffer_data_size)
+ if (last[0]->current_data + last[0]->current_length + tail_sz >
+ buffer_data_size)
{
u32 tmp_bi = 0;
if (vlib_buffer_alloc (vm, &tmp_bi, 1) != 1)