From 53395f407529b2e6ad7df9a92209073640f31714 Mon Sep 17 00:00:00 2001 From: Jakub Jelen Date: Thu, 4 Jun 2020 10:02:44 +0200 Subject: [PATCH] tcos: Replace assert with explicit check Thanks oss-fuzz https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=22999 --- src/libopensc/card-tcos.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/libopensc/card-tcos.c b/src/libopensc/card-tcos.c index ab37d4fe..0f2697c4 100644 --- a/src/libopensc/card-tcos.c +++ b/src/libopensc/card-tcos.c @@ -607,7 +607,9 @@ static int tcos_decipher(sc_card_t *card, const u8 * crgram, size_t crgram_len, tcos_data *data; int tcos3, r; - assert(card != NULL && crgram != NULL && out != NULL); + if (card == NULL || crgram == NULL || out == NULL) { + return SC_ERROR_INVALID_ARGUMENTS; + } ctx = card->ctx; tcos3=(card->type==SC_CARD_TYPE_TCOS_V3); data=(tcos_data *)card->drv_data;