From e79bf27c5a7d149bdb304fbabf8e420ebfdf9b7e Mon Sep 17 00:00:00 2001 From: WanqQixiang Date: Fri, 19 Apr 2024 15:58:44 +0800 Subject: [PATCH] ESP32: Drop Invalid RA packets --- src/platform/ESP32/route_hook/ESP32RouteHook.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/platform/ESP32/route_hook/ESP32RouteHook.c b/src/platform/ESP32/route_hook/ESP32RouteHook.c index d02c3d6eec0db0..bf1ad3284604b4 100644 --- a/src/platform/ESP32/route_hook/ESP32RouteHook.c +++ b/src/platform/ESP32/route_hook/ESP32RouteHook.c @@ -65,6 +65,11 @@ static void ra_recv_handler(struct netif * netif, const uint8_t * icmp_payload, { uint8_t opt_type = icmp_payload[0]; uint8_t opt_len = (uint8_t) (icmp_payload[1] << 3); + if (opt_len == 0 || opt_len > payload_len) + { + ESP_LOGE(TAG, "Invalid ND6 option length"); + break; + } if (opt_type == ND6_OPTION_TYPE_ROUTE_INFO && opt_len >= sizeof(route_option_t) - sizeof(ip6_addr_p_t) && !is_self_address(netif, src_addr) && payload_len >= opt_len)