From 489886724f53f1b890fd1888e45e3fb40e0603c4 Mon Sep 17 00:00:00 2001 From: Jakub Jelen Date: Mon, 26 Aug 2019 13:36:28 +0200 Subject: [PATCH] pkcs15-tccardos: Avoid negative indexing --- src/libopensc/pkcs15-tccardos.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/libopensc/pkcs15-tccardos.c b/src/libopensc/pkcs15-tccardos.c index d6d1490c..5409e282 100644 --- a/src/libopensc/pkcs15-tccardos.c +++ b/src/libopensc/pkcs15-tccardos.c @@ -215,7 +215,7 @@ static int parse_EF_CardInfo(sc_pkcs15_card_t *p15card) /* read EF_CardInfo1 */ r = read_file(p15card->card, "3F001003b200", info1, &info1_len); - if (r != SC_SUCCESS) + if (r != SC_SUCCESS || info1_len < 4) return SC_ERROR_WRONG_CARD; /* read EF_CardInfo2 */ r = read_file(p15card->card, "3F001003b201", info2, &info2_len);