Nexus/Pixel Security Bulletin for April is Now Available with OTA and Factory Images

A new month means it's time for a new security patch. Google has just released the April 2018 security patch for Nexus and Pixel devices. Factory images and OTA files are already available for download. The devices included are the Google Pixel 2, Pixel 2 XL, Google Pixel, Pixel XL, Nexus 6P, Nexus 5X, and Pixel C.

The April patch includes 62 issues that have been resolved. As usual, the vulnerabilities range from high to critical, but Google says there are no reports of users being affected. Like last month, the most severe vulnerability has to do with the media framework and the possibility of a remote attacker using a "specially crafted file" to execute arbitrary code. Here's the full list of functional updates:

Improvement	Devices
Enable Assisted Dialing support	Pixel 2, Pixel 2 XL
Improve anomaly detection metrics	All
Improve diskstats logging	All
Improve handover from VoLTE to VoWi-Fi during Emergency calls on certain carriers	Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Improve microvideo performance in Google Camera	Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Reduce delays upon opening specific apps	Pixel 2, Pixel 2 XL
Improve decoding of certain video streams	Pixel, Pixel XL
Improve fingerprint and keyboard latency in certain situations	Pixel 2, Pixel 2 XL
Adjust notifications when entering or exiting Wi-Fi coverage during a video call	Pixel 2, Pixel 2 XL
Enable IMS911 on certain networks	Pixel 2, Pixel 2 XL, Pixel, Pixel XL
Detect Wi-Fi Passport statistics for developers	All
Improve lock screen performance	All
Improve start time logging	All
Improve magnetic sensor performance	Pixel 2, Pixel 2 XL
Reduce battery drain after modem issues	Pixel 2, Pixel 2 XL
Improve modem stability on Pixel and Pixel 2 phones	Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Adjust Call Forwarding UI	Nexus 5X, Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Improve multi-calling performance over Wi-Fi	Pixel, Pixel XL
Improve data connectivity for T-Mobile users in parts of Australia	Pixel, Pixel XL
Update certification	Pixel, Pixel XL
Improve Wi-Fi stability on Pixel 2 phones	Pixel 2, Pixel 2 XL
Improve handover to Wi-Fi Calling in low-coverage areas	Pixel 2, Pixel 2 XL
Improve conference call performance over Wifi	Pixel 2, Pixel 2 XL
Improve VoLTE performance for some carriers	Nexus 5X, Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Adjust APN updating behavior	All
Improve settings app icons	All
Upgrade certificates to ensure continued service	Nexus 5X, Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Add methods to PeerHandle API for developers	All
Update Verizon Service APK for Pixel phones	Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Improve Wi-Fi and RPM logging	Pixel 2, Pixel 2 XL
Improve connectivity and performance on certain carrier networks	Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Improve notification listening apps	All
Address call forwarding issue	All
Improve internet connectivity on Pixel 2 on certain WiFi networks	Pixel 2
Adjust APN settings	Nexus 5X, Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Improve MMS messaging performance on certain carriers	Nexus 5X, Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Adjust battery learned capacity increment and decrement limits	Pixel 2, Pixel 2 XL
Change voice domain to CS for certain carriers	Pixel XL
Adjust timeouts for Phone App	All
Improve stability for Pixel 2 devices in certain parts of Canada	Pixel 2, Pixel 2 XL
Improve instant Apps performance	All
Improve indicators for emergency call connectivity	Pixel 2, Pixel 2 XL
Optimize search logic to improve battery performance	Pixel 2, Pixel 2 XL
Improve battery logging for Pixel 2 and Pixel 2 XL	Pixel 2, Pixel 2 XL
Improve GPS Time performance on Pixel 2 XL	Pixel 2 XL
Improve audio speaker performance during phone calls	All
Adjust advanced calling settings for Verizon	Nexus 5X, Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Change to prioritize certain bands	Nexus 5X, Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Improve in-call performance for some carriers	Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Improve network performance on Simyo carrier	Nexus 5X
Improve connectivity metrics	All
Improve experience switching between LTE and Wifi	Pixel 2 XL
Improve data performance for devices with certain SIM cards	All
Improve autofill logging	All
Improve internal troubleshooting tools	All
Improve network logging	All

The Pixel/Nexus Security Bulletin is live right now. The general Android bulletin should be available sometime soon. You can find the OTA files and factory images for your device from the links below.

Source: Pixel/Nexus Security Bulletin
Source: OTA Images
Source: Factory Images

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