!20 Fix null dereference in findLBEndpointSandbox

From: @guojunding 
Reviewed-by: @zmr_2020, @xuxuepeng 
Signed-off-by: @xuxuepeng

backport-Fix-null-dereference-in-findLBEndpointSandbox.patch

@@ -0,0 +1,37 @@
+From 90990763aa5895d00934ef0924b10ca7b39821eb Mon Sep 17 00:00:00 2001
+From: Scott Percival <scottp@lastyard.com>
+Date: Tue, 22 Sep 2020 14:56:03 +0800
+Subject: [PATCH] service_linux: Fix null dereference in findLBEndpointSandbox
+
+Signed-off-by: Scott Percival <scottp@lastyard.com>
+(cherry picked from commit 2fe6352d2420502217c3249db8c03c0d52287069)
+Signed-off-by: Ameya Gawde <agawde@mirantis.com>
+
+---
+ service_linux.go | 8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+diff --git libnetwork-d00ceed44cc447c77f25cdf5d59e83163bdcb4c9/service_linux.go libnetwork-d00ceed44cc447c77f25cdf5d59e83163bdcb4c9-b/service_linux.go
+index 3ffa607..bb0074f 100644
+--- libnetwork-d00ceed44cc447c77f25cdf5d59e83163bdcb4c9/service_linux.go
++++ libnetwork-d00ceed44cc447c77f25cdf5d59e83163bdcb4c9-b/service_linux.go
+@@ -67,11 +67,13 @@ func (n *network) findLBEndpointSandbox() (*endpoint, *sandbox, error) {
+ 	if !ok {
+ 		return nil, nil, fmt.Errorf("Unable to get sandbox for %s(%s) in for %s", ep.Name(), ep.ID(), n.ID())
+ 	}
+-	ep = sb.getEndpoint(ep.ID())
+-	if ep == nil {
++	var sep *endpoint
++	sep = sb.getEndpoint(ep.ID())
++	if sep == nil {
+ 		return nil, nil, fmt.Errorf("Load balancing endpoint %s(%s) removed from %s", ep.Name(), ep.ID(), n.ID())
+ 	}
+-	return ep, sb, nil
++	return sep, sb, nil
++	
+ }
+ 
+ // Searches the OS sandbox for the name of the endpoint interface
+-- 
+2.9.3.windows.1
+

libnetwork.spec

@@ -1,11 +1,14 @@
 %define  debug_package %{nil}
 Name: libnetwork
 Version: 0.8.0.dev.2
-Release: 102
+Release: 103
 Summary: Proxy used for docker port mapping
 License: Apache License 2.0
 URL: https://github.com/docker/libnetwork
 Source: libnetwork-d00ceed.tar.gz
+
+Patch1:  backport-Fix-null-dereference-in-findLBEndpointSandbox.patch
+
 BuildRequires: golang >= 1.8.3
 BuildRequires: make
 Provides: docker-proxy
@@ -15,6 +18,7 @@ Obsoletes: docker-proxy
 
 %prep
 %setup -c -n libnetwork
+%patch1  -p0
 
 %build
 cd libnetwork-d00ceed44cc447c77f25cdf5d59e83163bdcb4c9
@@ -41,6 +45,9 @@ install -p -m 755 libnetwork-d00ceed44cc447c77f25cdf5d59e83163bdcb4c9/docker-pro
 %{_bindir}/docker-proxy
 
 %changelog
+* Thu Jul 18 2024 guojunding <guojunding@kylinos.cn> - 0.8.0.dev.2-103
+- Fix null dereference in findLBEndpointSandbox
+
  * Thu Mar 18 2021 xiadanni<xiadanni1@huawei.com> 0.8.0.dev.2-102
  - Type:bugfix
  - Id:NA