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Date:   Fri, 22 Sep 2023 07:51:34 +0700
From:   Bagas Sanjaya <bagasdotme@gmail.com>
To:     Turritopsis Dohrnii Teo En Ming <teo.en.ming@protonmail.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     <ceo@teo-en-ming-corp.com>
Subject: Re: My brand new vivo V25 Pro 5G Android mobile phone is running on
 Linux kernel 4.19.191+
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[trimming personal and obvious *political* info]

On Thu, Sep 21, 2023 at 04:20:06PM +0000, Turritopsis Dohrnii Teo En Ming w=
rote:
> My brand new vivo V25 Pro 5G Android mobile phone is running on Linux ker=
nel 4.19.191+. Are there any severe/critical security vulnerabilities in Li=
nux kernel 4.19.191+ that will allow government-sponsored or state-backed h=
ackers or Advanced Persistent Threats (APTs) to take over absolute control =
of my brand new vivo mobile phone? Can I download, compile and install the =
latest Linux kernel 6.5.4 from sources on my brand new vivo mobile phone by=
 myself? I would like to know how I can do it.
>=20

There are Android Security Bulletin listings on [1], with vivo-specific
bulletins can be found at [2].

For building kernels, you can follow official Android guide [3]. Or
you can also visit XDA forums [4] where people posted their own custom
kernels. But usually your vendor (vivo) takes care of kernel updates
anyway.


> I have decided to buy this vivo mobile phone because my Samsung Galaxy A3=
2 5G mobile phone has now become extremely slow in performance and lags lik=
e hell. Maybe too many apps were installed.

What are these apps besides built-in ones?

> Opening and using apps is now a slow and painful experience. The phone ca=
mera is even worse. Taking a photo or selfie takes 2-3 seconds. If you move=
 the phone by a bit before the 3 seconds is up, your photo or selfie will t=
urn out very blur. So you need to set a timer of 2 seconds when you take a =
selfie or photo. Taking videos with the phone camera is also very laggy and=
 choppy. The recorded video will turn out to be choppy.
>=20

What is your Samsung phone specification then?

Thanks.

[1]: https://source.android.com/docs/security/bulletin/asb-overview
[2]: https://www.vivo.com/en/security
[3]: https://source.android.com/docs/setup/build/building-kernels
[4]: https://forum.xda-developers.com

--=20
An old man doll... just what I always wanted! - Clara

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