File CVE-2017-6414-qemuu-libcacard-host-memory-leakage-while-creating-new-APDU.patch of Package xen.7673

References: bsc#1027570 CVE-2017-6414

smartcard: fix memory leak in vcard_apdu_new
In the error path, 'new_apdu->a_data' is not freed.
This can be triggered by the guest continuely.

Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>

Index: xen-4.4.4-testing/tools/qemu-xen-dir-remote/libcacard/card_7816.c
===================================================================
--- xen-4.4.4-testing.orig/tools/qemu-xen-dir-remote/libcacard/card_7816.c
+++ xen-4.4.4-testing/tools/qemu-xen-dir-remote/libcacard/card_7816.c
@@ -342,12 +342,12 @@ vcard_apdu_new(unsigned char *raw_apdu,
     new_apdu->a_len = len;
     *status = vcard_apdu_set_class(new_apdu);
     if (*status != VCARD7816_STATUS_SUCCESS) {
-        g_free(new_apdu);
+        vcard_apdu_delete(new_apdu);
         return NULL;
     }
     *status = vcard_apdu_set_length(new_apdu);
     if (*status != VCARD7816_STATUS_SUCCESS) {
-        g_free(new_apdu);
+        vcard_apdu_delete(new_apdu);
         new_apdu = NULL;
     }
     return new_apdu;