About Apple security updates
For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security updates page.
Apple security documents reference vulnerabilities by CVE-ID when possible.
Security Update 2018-001 Swift 4.1.1 for Ubuntu 14.04
Released May 4, 2018
Swift for Ubuntu
Available for: Ubuntu 14.04
Not impacted: Ubuntu 16.04 and 16.10
Impact: A process may gain admin privileges and execute arbitrary code
Description: An issue existed in specific versions of Swift on Ubuntu 14.04 where libraries are loaded with write and execute permissions. This issue was addressed with improved permissions.