[Bug 2150695] Re: sudo-rs won't allow root in proot in Termux in Android

[Shem Pasamba]

> It's awesome that you want to run Ubuntu inside a proot-distro! However,
> I may be wrong, but I don't see this problem as related to sudo-rs or
> Ubuntu based on your bug description.
>
> The issue related to sudo-rs is:
>
> > sudo: The "no new privileges" flag is set, which prevents sudo from
> running as root.
>
> and your problem is:
>
> > That flag can't be changed in the kernel since I'm running Android
>
> IIUC, you are asking for a way to circumvent the no_new_privs flag,
> which is not something we would do. This is likely set by the Android
> sandbox as a security measure.
>

Yes. Maybe I wasn't explicit enough. The old sudo did not check for that
flag, probably, so it works. I'm filing a bug since sudo-rs does not behave
as the old sudo, since it checks for that flag, while the old sudo probably
does not.

>
> For reference, see this similar issue that was raised on the proot-
> distro upstream: https://github.com/termux/proot-distro/issues/533
>
>
> ** Bug watch added: github.com/termux/proot-distro/issues #533
>    https://github.com/termux/proot-distro/issues/533
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/2150695
>
> Title:
>   sudo-rs won't allow root in proot in Termux in Android
>
> To manage notifications about this bug go to:
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> https://bugs.launchpad.net/ubuntu/+source/rust-sudo-rs/+bug/2150695/+subscriptions
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>

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https://bugs.launchpad.net/bugs/2150695

Title:
  sudo-rs won't allow root in proot in Termux in Android

Status in rust-sudo-rs package in Ubuntu:
  Invalid

Bug description:
  Unable get root in Ubuntu using sudo-rs when running it in proot in
  Termux in Android due to the check of a flag in the kernel. That flag
  can't be changed in the kernel since I'm running Android.

  The output is:
  sudo: The "no new privileges" flag is set, which prevents sudo from running as root.
  sudo: If sudo is running in a container, you may need to adjust the container configuration to disable the flag.

  Fix:
  Login as root & purge sudo-rs:

  pd login --user root ubuntu
  apt purge sudo-rs
  apt install sudo

  Then one can login and use sudo normally as before:

  pd login --user shemgp ubuntu
  sudo apt update -y

  ProblemType: Bug
  DistroRelease: Ubuntu 26.04
  Package: sudo-rs (not installed)
  Uname: Linux 6.17.0-PRoot-Distro aarch64
  ApportVersion: 2.34.0-0ubuntu2
  Architecture: arm64
  CasperMD5CheckResult: unknown
  Date: Thu Apr 30 11:29:20 2026
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   TERM=xterm-256color
  SourcePackage: rust-sudo-rs
  UpgradeStatus: Upgraded to resolute on 2026-04-23 (7 days ago)

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