fix negative index

Signed-off-by: Shuting Zhao <shutting06@gmail.com>
kyverno · Feb 26, 2021 · 7795f33 · 7795f33
1 parent 517c60f
commit 7795f33
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/pkg/engine/mutate/patchesUtils.go b/pkg/engine/mutate/patchesUtils.go
@@ -243,6 +243,9 @@ func getObject(path string, resource map[string]interface{}) (interface{}, error
 				if err != nil {
 					return nil, fmt.Errorf("cannot parse index in JSON Patch at %s: %v", strings.Join(paths[:i+1], "/"), err)
 				}
+				if idx < 0 {
+					idx = len(strippedResource.([]interface{})) - 1
+				}
 			}
 
 			if len(strippedResource.([]interface{})) <= idx {