diff --git a/pkg/daemon/discover/discover.go b/pkg/daemon/discover/discover.go
index e735fa82452be..50d590eee5060 100644
--- a/pkg/daemon/discover/discover.go
+++ b/pkg/daemon/discover/discover.go
@@ -158,6 +158,7 @@ func rawUdevBlockMonitor(c chan string, matches, exclusions []string) {
 		logger.Warningf("Cannot open udevadm stdout: %v", err)
 		return
 	}
+	defer stdout.Close()
 
 	err = cmd.Start()
 	if err != nil {
diff --git a/pkg/util/exec/exec.go b/pkg/util/exec/exec.go
index 67913e1f512ab..950f96ce419be 100644
--- a/pkg/util/exec/exec.go
+++ b/pkg/util/exec/exec.go
@@ -238,6 +238,7 @@ func startCommand(env []string, command string, arg ...string) (*exec.Cmd, io.Re
 	if err != nil {
 		logger.Warningf("failed to open stdout pipe: %+v", err)
 	}
+	defer stdout.Close()
 	stderr, err := cmd.StderrPipe()
 	if err != nil {
 		logger.Warningf("failed to open stderr pipe: %+v", err)