Stack-based buffer overflow in the encode_key function in /system/bin/keystore in the KeyStore service in Android 4.3 allows attackers to execute arbitrary code, and consequently obtain sensitive key information or bypass intended restrictions on cryptographic operations, via a long key name.
packetstormsecurity.com/files/127185/Android-KeyStore-Stack-Buffer-Overflow.html
www.securityfocus.com/archive/1/532527/100/0/threaded
www.securityfocus.com/bid/68152
www.slideshare.net/ibmsecurity/android-keystorestackbufferoverflow
securityintelligence.com/android-keystore-stack-buffer-overflow-to-keep-things-simple-buffers-are-always-larger-than-needed/