scd: Serialize CARD access for send_card_and_app_list.

* scd/app.c (send_card_and_app_list): Lock the CARD.

--

GnuPG-bug-id: 7323
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>

1 files changed, 7 insertions, 2 deletions

diff --git a/scd/app.c b/scd/app.c
index ffb7544ec..9db4abc44 100644
--- a/scd/app.c
+++ b/scd/app.c
@@ -2776,9 +2776,14 @@ send_card_and_app_list (ctrl_t ctrl, card_t wantcard, int with_apps)
 
   for (n=0; n < ncardlist; n++)
     {
-      if (wantcard && wantcard != cardlist[n])
+      card_t card = cardlist[n];
+
+      if (wantcard && wantcard != card)
         continue;
-      err = send_serialno_and_app_status (cardlist[n], with_apps, ctrl);
+
+      lock_card (card, ctrl);
+      err = send_serialno_and_app_status (card, with_apps, ctrl);
+      unlock_card (card);
       if (err)
         goto leave;
     }