service_linux: Fix null dereference in findLBEndpointSandbox

scottp-dpaw · scottp-dpaw · commit 2fe6352d2420 · 2020-09-22T15:06:41.000+08:00
Signed-off-by: Scott Percival &lt;scottp@lastyard.com&gt;
diff --git a/service_linux.go b/service_linux.go
@@ -67,11 +67,12 @@ 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

Original file line number	Diff line number	Diff line change
`@@ -67,11 +67,12 @@ func (n network) findLBEndpointSandbox() (endpoint, *sandbox, error) {`
`67`	`67`	`if !ok {`
`68`	`68`	`return nil, nil, fmt.Errorf("Unable to get sandbox for %s(%s) in for %s", ep.Name(), ep.ID(), n.ID())`
`69`	`69`	`}`
`70`		`- ep = sb.getEndpoint(ep.ID())`
`71`		`- if ep == nil {`
	`70`	`+ var sep *endpoint`
	`71`	`+ sep = sb.getEndpoint(ep.ID())`
	`72`	`+ if sep == nil {`
`72`	`73`	`return nil, nil, fmt.Errorf("Load balancing endpoint %s(%s) removed from %s", ep.Name(), ep.ID(), n.ID())`
`73`	`74`	`}`
`74`		`- return ep, sb, nil`
	`75`	`+ return sep, sb, nil`
`75`	`76`	`}`
`76`	`77`
`77`	`78`	`// Searches the OS sandbox for the name of the endpoint interface`