In iOS before 11.4, a memory corruption issue exists and was addressed with improved memory handling.
https://support.apple.com/HT208848
http://www.securitytracker.com/id/1041665
http://www.securityfocus.com/bid/105384
Source: Mitre, NVD
Published: 2019-01-11
Updated: 2019-01-23
Base Score: 9.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C
Severity: High
Base Score: 7.8
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H