CVE-2016-2420
rootdir/init.rc in Android 4.x before 4.4.4 does not ensure that the /data/tombstones directory exists for the Debuggerd component, which allows attackers to gain privileges via a crafted application, aka internal bug 26403620.
Date published : 2016-04-17
http://source.android.com/security/bulletin/2016-04-02.html
https://android.googlesource.com/platform/system/core/+/669ecc2f5e80ff924fa20ce7445354a7c5bcfd98