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-rw-r--r--src/plugins/dhcp/dhcp_api.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/plugins/dhcp/dhcp_api.c b/src/plugins/dhcp/dhcp_api.c
index a5163ca2e95..d2e423572fb 100644
--- a/src/plugins/dhcp/dhcp_api.c
+++ b/src/plugins/dhcp/dhcp_api.c
@@ -549,6 +549,12 @@ void
params.T1 = ntohl (mp->T1);
params.T2 = ntohl (mp->T2);
n_addresses = ntohl (mp->n_addresses);
+ /* Make sure that the number of addresses is sane */
+ if (n_addresses * sizeof (params.addresses) > vl_msg_api_max_length (mp))
+ {
+ rv = VNET_API_ERROR_INVALID_VALUE;
+ goto bad_sw_if_index;
+ }
params.addresses = 0;
if (n_addresses > 0)
vec_validate (params.addresses, n_addresses - 1);
@@ -593,6 +599,14 @@ void
params.T1 = ntohl (mp->T1);
params.T2 = ntohl (mp->T2);
n_prefixes = ntohl (mp->n_prefixes);
+
+ /* Minimal check to see that the number of prefixes is sane */
+ if (n_prefixes * sizeof (params.prefixes) > vl_msg_api_max_length (mp))
+ {
+ rv = VNET_API_ERROR_INVALID_VALUE;
+ goto bad_sw_if_index;
+ }
+
params.prefixes = 0;
if (n_prefixes > 0)
vec_validate (params.prefixes, n_prefixes - 1);