From ab548fe76f8e3b54f82fc630ab94c4b3423ee8a2 Mon Sep 17 00:00:00 2001
From: Richard Fuchs <rfuchs@sipwise.com>
Date: Mon, 29 Jun 2026 08:27:41 -0400
Subject: [PATCH] MT#55283 protect against NULL ssrc_in

Closes #2124

Change-Id: Ib2126847e3080a7992debfb604642e5ecd4cdc58
(cherry picked from commit 4551c7ae9558d620f20047fbcd2d403d9ef3fa45)
(cherry picked from commit dd4cd3d05db7b7b926b520daf7f5e902d3b6553b)
---
 daemon/codec.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/daemon/codec.c b/daemon/codec.c
index fa008d610..8ac74d51f 100644
--- a/daemon/codec.c
+++ b/daemon/codec.c
@@ -5001,6 +5001,9 @@ void codec_calc_jitter(struct ssrc_entry_call *ssrc, unsigned long ts, unsigned
 		ssrc->jitter += d - ((ssrc->jitter + 8) >> 4);
 }
 static void codec_calc_lost(struct ssrc_entry_call *ssrc, uint16_t seq) {
+	if (!ssrc)
+		return;
+
 	LOCK(&ssrc->h.lock);
 
 	// XXX shared code from kernel module