An out-of-bounds read issue was discovered in the Yubico-Piv 1.5.0 smartcard driver. The file lib/ykpiv.c contains the following code in the function `_ykpiv_fetch_object`: {% highlight c %} if { size_t outlen; int offs = _ykpiv_get_length; if { return YKPIV_SIZE_ERROR; } memmove; *len = outlen; return YKPIV_OK; } else { return YKPIV_GENERIC_ERROR; } {% endhighlight %} -- in the end, a `memmove` occurs with a length retrieved from APDU data. This length is not checked for whether it is outside of the APDU data retrieved. Therefore the `memmove` could copy bytes behind the allocated data buffer into this buffer.