From b61026feb0cf160934225ad134c1eb1c74cd05ef Mon Sep 17 00:00:00 2001
From: IssaAbuKalbein <86603440+IssaAbuKalbein@users.noreply.github.com>
Date: Thu, 4 Jan 2024 17:56:11 +0200
Subject: [PATCH] [UDP Proxy] Fix a bug in UDP session filter (#31316)

Signed-off-by: Issa Abu Kalbein <iabukalbein@microsoft.com>
---
 .../extensions/filters/udp/udp_proxy/session_filters/filter.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/source/extensions/filters/udp/udp_proxy/session_filters/filter.h b/source/extensions/filters/udp/udp_proxy/session_filters/filter.h
index b0daa46b27ba..f9d5af16215e 100644
--- a/source/extensions/filters/udp/udp_proxy/session_filters/filter.h
+++ b/source/extensions/filters/udp/udp_proxy/session_filters/filter.h
@@ -88,7 +88,7 @@ class FilterBase {
 /**
  * Session read filter interface.
  */
-class ReadFilter : public FilterBase {
+class ReadFilter : public virtual FilterBase {
 public:
   virtual ~ReadFilter() = default;
 
@@ -134,7 +134,7 @@ enum class WriteFilterStatus {
 /**
  * Session write filter interface.
  */
-class WriteFilter : public FilterBase {
+class WriteFilter : public virtual FilterBase {
 public:
   virtual ~WriteFilter() = default;