Every month Google will gather up all of the Android security fixes for AOSP and make them available so that OEMs can implement them in their ROMs. These go out a month in advance so that all of the companies have enough time to implement them before they are disclosed to the public. Companies like LG and Samsung add in so many features to their OEM ROMs that they sometimes introduce their own bugs and security holes into the software they’re pushing out to their devices, prompting them to release specialized patches too.
This has resulted in these companies offering a security bulletin page for their own devices: LG, Samsung, BlackBerry and other smartphone OEMs have thus stepped up to provide secure software to their customers, informing us their device-specific changes. This also results in smartphone OEMs deciding which smartphones are eligible for these new security updates as well. Companies like Google promise 24 months of major version updates and 36 months of security updates, for example, and we would expect most other manufacturers (particularly the bigger names in the industry) to offer similar coverage.
OEMs like Samsung and LG tend to offer long-lasting security patch support, but only for their flagship devices. There are cases in which low-end or mid-range devices are also added to the list, but it’s generally handled as a case by case basis and, sadly, it’s not something that is guaranteed. LG has given us a list of which smartphones they are providing these security updates for, and the September update looks to have removed some devices from this list.
They have dropped G3, G4, G4 Stylus, CK and G Stylo… no more security updates for those devices. https://t.co/SjEqQJkgkL
— autoprime (@utoprime) September 29, 2017
As of this latest update, LG is providing security updates for the LG G5, LG G6, LG V10, LG V20, LG V30, LG Q6, LG Q8, LG X300, LG X400, LG X500 and the LG X cam. As mentioned though, this list of devices changed with this update and no longer includes the LG G3, LG G4, LG G4 Stylus, LG Ck and the LG G Stylo. So if you own a smartphone listed in this second group of devices then you should not expect official security updates from LG anymore.
Via: @utoprime Source: LG Security Bulletins