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Diffstat (limited to 'src/plugins/wireguard/wireguard_peer.c')
-rw-r--r--src/plugins/wireguard/wireguard_peer.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/plugins/wireguard/wireguard_peer.c b/src/plugins/wireguard/wireguard_peer.c
index 81cc74adc91..f5fbc3c178c 100644
--- a/src/plugins/wireguard/wireguard_peer.c
+++ b/src/plugins/wireguard/wireguard_peer.c
@@ -103,7 +103,8 @@ wg_peer_build_rewrite (const wg_peer_t *peer, u8 is_ip4)
{
ip4_udp_header_t *hdr;
- vec_validate (rewrite, sizeof (*hdr) - 1);
+ /* reserve space for ip4, udp and wireguard headers */
+ vec_validate (rewrite, sizeof (ip4_udp_wg_header_t) - 1);
hdr = (ip4_udp_header_t *) rewrite;
hdr->ip4.ip_version_and_header_length = 0x45;
@@ -121,7 +122,8 @@ wg_peer_build_rewrite (const wg_peer_t *peer, u8 is_ip4)
{
ip6_udp_header_t *hdr;
- vec_validate (rewrite, sizeof (*hdr) - 1);
+ /* reserve space for ip6, udp and wireguard headers */
+ vec_validate (rewrite, sizeof (ip6_udp_wg_header_t) - 1);
hdr = (ip6_udp_header_t *) rewrite;
hdr->ip6.ip_version_traffic_class_and_flow_label = 0x60;