From: Alan T. DeKok <aland@freeradius.org>
Date: Wed, 14 Jun 2023 14:09:24 +0000 (-0400)
Subject: double-check for bad packets.  Fixes #5060
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=75e677d23dec28b3b916a55c246c1e62690a46cc;p=thirdparty%2Ffreeradius-server.git

double-check for bad packets.  Fixes #5060
---

diff --git a/src/process/dhcpv4/base.c b/src/process/dhcpv4/base.c
index 16f5e037b05..fcc5b724cb0 100644
--- a/src/process/dhcpv4/base.c
+++ b/src/process/dhcpv4/base.c
@@ -414,6 +414,11 @@ static unlang_action_t mod_process(rlm_rcode_t *p_result, module_ctx_t const *mc
 
 	UPDATE_STATE(packet);
 
+	if (!state) {
+		RDEBUG("DHCPv4 received unknown packet code %u", request->packet->code);
+		RETURN_MODULE_FAIL;
+	}
+
 	dhcpv4_packet_debug(request, request->packet, &request->request_pairs, true);
 
 	return state->recv(p_result, mctx, request);