diff --git a/lib/cryptohi/seckey.c b/lib/cryptohi/seckey.c
--- a/lib/cryptohi/seckey.c
+++ b/lib/cryptohi/seckey.c
@@ -639,6 +639,11 @@
return pubk;
break;
case SEC_OID_ANSIX962_EC_PUBLIC_KEY:
+ /* A basic sanity check on inputs. */
+ if (spki->algorithm.parameters.len == 0 || newOs.len == 0) {
+ PORT_SetError(SEC_ERROR_INPUT_LEN);
+ break;
+ }
pubk->keyType = ecKey;
pubk->u.ec.size = 0;