Please note there is two separated patch:
Security update (Settings -> Security -> Security update) 7.1MB (reboot required)
Google Play system update (Settings -> Security -> Google Play system update) 12MB (reboot required)
Source
Security updated only for Pixels:
CVE-2019-2183 A-136261465 ID High RegisteredServicesCache
CVE-2019-2297 A-117937358
QC-CR#2205722 N/A Moderate WLAN host
CVE-2019-10566 A-112432329
QC-CR#2312995 N/A Moderate WLAN host
Additional security updates NOT ONLY for Pixels: https://source.android.com/security/bulletin/2019-10-01
Pixel 2 (XL) related Functional patches:
A-138482990 Connectivity Wi-Fi stability improvements Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a, Pixel 3a XL
A-140111727 System System stability improvements Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a, Pixel 3a XL
A-138323667 UI Fix for memory drain in UI Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a, Pixel 3a XL
A-138775282 UI Fix for missing heads-up notifications Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a, Pixel 3a XL
A-138881088 UI Gesture navigation stability improvements Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a, Pixel 3a XL
A-140197723 UI Fix for bootloop in certain device locale modes Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a, Pixel 3a XL
Not Pixel 2 related:
A-139096431 Pixel Stand Fix for missing notifications in Pixel Stand mode Pixel 3, Pixel 3 XL
A-140632869 Sensors Sensor calibration improvements Pixel 3, Pixel 3 XL
Security update (Settings -> Security -> Security update) 7.1MB (reboot required)
Google Play system update (Settings -> Security -> Google Play system update) 12MB (reboot required)
Source
Security updated only for Pixels:
CVE-2019-2183 A-136261465 ID High RegisteredServicesCache
CVE-2019-2297 A-117937358
QC-CR#2205722 N/A Moderate WLAN host
CVE-2019-10566 A-112432329
QC-CR#2312995 N/A Moderate WLAN host
Additional security updates NOT ONLY for Pixels: https://source.android.com/security/bulletin/2019-10-01
Pixel 2 (XL) related Functional patches:
A-138482990 Connectivity Wi-Fi stability improvements Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a, Pixel 3a XL
A-140111727 System System stability improvements Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a, Pixel 3a XL
A-138323667 UI Fix for memory drain in UI Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a, Pixel 3a XL
A-138775282 UI Fix for missing heads-up notifications Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a, Pixel 3a XL
A-138881088 UI Gesture navigation stability improvements Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a, Pixel 3a XL
A-140197723 UI Fix for bootloop in certain device locale modes Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a, Pixel 3a XL
Not Pixel 2 related:
A-139096431 Pixel Stand Fix for missing notifications in Pixel Stand mode Pixel 3, Pixel 3 XL
A-140632869 Sensors Sensor calibration improvements Pixel 3, Pixel 3 XL
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