Xperia XA1 and XA1 Plus updated with Spectre and Meltdown patches

by XB on 12th January 2018

in Firmware, Xperia XA series

Sony Mobile has updated the Xperia XA1 and Xperia XA1 Plus with new firmware updates that move the Android security patch to 5 January 2018. The importance of this security update is that the Meltdown and Spectre CPU vulnerabilities are now patched.

The Sony Xperia XA1 firmware has moves the build number from 40.0.A.6.175 to version 40.0.A.6.189. The Sony Xperia XA1 Plus moves from 48.0.A.1.117 to version 48.0.A.1.131. The handsets remain on Android 7.0 Nougat, but Sony is planning an upgrade to Android Oreo later in the year.

Thanks Mike!

  • dragonsneeze

    I thought Cortex-A53s weren’t affected.

  • Melissa

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  • ZerothGlacius

    They aren’t, the January security patch includes OS level fixes for meltdown and spectre, as the kernel is the same code across devices. That means these vulnerabilities will not work on any device updated with the January patch. The good news is that since the CPU was never affected (A53), performance losses are likely to be zero.

  • dragonsneeze

    So they didn’t need a fix for these vulnerabilities, right? If they weren’t affected in the first place.

  • Hazel

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  • ZerothGlacius

    Exactly. No fix needed, but the OS gets the update anyway (Google is pushing some kernel level updates to all devices). Similar to how MS pushed out the Meltdown update for users running AMD CPUs as well, even though AMD CPUs were not vulnerable to meltdown.

    This is because OS code needs to be device agnostic so that compilers can easily compile it to the desired target (x86, ARM etc.)

  • dragonsneeze

    I guess the article title is a little misinterpreted, that’s why I wanted to ask. Anyway, thanks for the explanation. :)

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