[Bug 2130973] [NEW] Sudo-rs panics executing shell script without execute permission

[paul hollywood]

Public bug reported:

My Ubuntu Budgie install was updated to Ubuntu 25.10 last week which
replaced sudo with the rust sudo-rs version 0.2.8.

Today I was executing a bash script with sudo and forgot to grant the
script execute permission. Not a big problem however the response from
sudo-rs was a panic, rather than a gracefully handled error message.

I retested with a very simple script and the panic is 100% reproducible.

Is this the same bug as: https://github.com/trifectatechfoundation/sudo-
rs/pull/1298

sudo ./test

#!/bin/bash
sudo apt update

thread ‘main’ panicked at src/exec/use_pty/monitor.rs:283:45:
internal error: entered unreachable code
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
sudo-rs: cannot execute ‘/home/REDACTED/test’: Permission denied (os error 13)

ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: sudo-rs 0.2.8-1ubuntu5
ProcVersionSignature: Ubuntu 6.17.0-6.6-generic 6.17.1
Uname: Linux 6.17.0-6-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: Budgie
Date: Sun Nov  9 09:25:14 2025
InstallationDate: Installed on 2025-10-23 (17 days ago)
InstallationMedia: Ubuntu-Budgie 25.04 "Plucky Puffin" - Release amd64 (20250415.2)
ProcEnviron:
 LANG=en_GB.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: rust-sudo-rs
UpgradeStatus: Upgraded to questing on 2025-11-02 (7 days ago)

** Affects: rust-sudo-rs (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug questing

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https://bugs.launchpad.net/bugs/2130973

Title:
  Sudo-rs panics executing shell script without execute permission

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

Bug description:
  My Ubuntu Budgie install was updated to Ubuntu 25.10 last week which
  replaced sudo with the rust sudo-rs version 0.2.8.

  Today I was executing a bash script with sudo and forgot to grant the
  script execute permission. Not a big problem however the response from
  sudo-rs was a panic, rather than a gracefully handled error message.

  I retested with a very simple script and the panic is 100%
  reproducible.

  Is this the same bug as:
  https://github.com/trifectatechfoundation/sudo-rs/pull/1298

  sudo ./test

  #!/bin/bash
  sudo apt update

  thread ‘main’ panicked at src/exec/use_pty/monitor.rs:283:45:
  internal error: entered unreachable code
  note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
  sudo-rs: cannot execute ‘/home/REDACTED/test’: Permission denied (os error 13)

  ProblemType: Bug
  DistroRelease: Ubuntu 25.10
  Package: sudo-rs 0.2.8-1ubuntu5
  ProcVersionSignature: Ubuntu 6.17.0-6.6-generic 6.17.1
  Uname: Linux 6.17.0-6-generic x86_64
  ApportVersion: 2.33.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: Budgie
  Date: Sun Nov  9 09:25:14 2025
  InstallationDate: Installed on 2025-10-23 (17 days ago)
  InstallationMedia: Ubuntu-Budgie 25.04 "Plucky Puffin" - Release amd64 (20250415.2)
  ProcEnviron:
   LANG=en_GB.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  SourcePackage: rust-sudo-rs
  UpgradeStatus: Upgraded to questing on 2025-11-02 (7 days ago)

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