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-rw-r--r--udev/ykfde.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/udev/ykfde.c b/udev/ykfde.c
index ab20fbd..ef0cefc 100644
--- a/udev/ykfde.c
+++ b/udev/ykfde.c
@@ -178,6 +178,7 @@ static int get_response(const unsigned int serial, uint8_t slot, char * challeng
second_factor_len = strlen(second_factor);
memcpy(challenge, second_factor, second_factor_len < CHALLENGELEN / 2 ?
second_factor_len : CHALLENGELEN / 2);
+ memset(second_factor, 0, second_factor_len);
free(second_factor);
}