Sony has started pushing out a new update to its Xperia XA1 and XA1 Plus smartphones. Arriving as build number 40.0.A.6.189 and 48.0.A.1.131, respectively, the update brings along Android security fixes for the month of January. It also includes fixes for the recently-uncovered Spectre and Meltdown security vulnerabilities. The Android version remains at 7.0 Nougat though. As is usually the case with OTA roll outs, it might take time for the update to reach your device, so be patient. Meanwhile, for what it's worth, the Sony Xperia E5 from 2016 has also been receiving a new update....
Source: https://www.gsmarena.com/new_sony_xperia_xa1_xa1_plus_update_brings_spectre_and_meltdown_fixes-news-29142.php