Guard nil certificate in signature checker

micromdm · Feb 7, 2023 · 91f26b5 · 91f26b5
1 parent c90f186
commit 91f26b5
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/certverify/signature.go b/certverify/signature.go
@@ -18,6 +18,9 @@ func NewSignatureVerifier(rootPEM []byte) (*SignatureVerifier, error) {
 	if err != nil {
 		return nil, err
 	}
+	if ca == nil {
+		return nil, errors.New("nil PEM certificate")
+	}
 	return &SignatureVerifier{ca: ca}, nil
 }