Xperia Z3, Z3 Compact and Z2 Receive Android 5.1.1 Latest Build with Stagefright bug fix
Sony has started rolling out a new firmware update with build number 23.4.A.0.580 for select Xperia series handsets. The updates includes a security patch for the Stagefright exploit reported on last week.
So far the firmware is live for Xperia Z3 (D6603), Z3 Compact (D5803) and Z2 (D6503) in regions including three Austria and Vodafone subscribers in the UK and Spain, reports Xperia Blog.
If you’re in the firmware supported regions, you can check the availability of the update manually by heading over to Settings > About Phone > Software updates > System updates.
“I have tested it and flashed it on my rooted v5.1.1 stock 23.4.A.0.546 ROM and the ‘Stagefright Vulnerability’ is now fixed as you can see in the screenshots below,” confirms XDA forum member named manipars.
According to manipars, the patch is only 2.6MB in size and updates all the 35 libstagefright libraries to the latest version from the Stock Sony 23.4.A.0.580 ROM.
The Stagefright media library in Android, which is written in C++, was found prone to easy exploitation by security team Zimporium, who later alerted Google about it. The vulnerability allows an attacker to access multimedia files or potentially take control of a vulnerable device.
Since then, all major smartphone manufacturers have been hasty in developing and releasing security patches for their respective variant of Android OS.
Last week, Sony said it had received patches from Google to deal with the Stagefright issue and was rolling them out through carrier networks within the software maintenance updates.
Sony has yet to make the FTF links available for a manual installation, though a pre-rooted version of 23.4.A.0.580 build (UK Vodafone) for the Z3 Compact has been shared in the forum. You can download the flash in recovery from HERE.