Public bug reported:
After completing the Ubuntu Studio live installer (ubuntu-desktop-
bootstrap), the splash screen intended to provide visual feedback during
theme switching fails to display when using the org.ubuntustudio-
dark.desktop theme.
Error message:
kf6.package: Path traversal attempt detected: "/usr/share/plasma/look-
and-feel/org.ubuntustudio.desktop/contents/splash/Splash.qml" is not
inside "/usr/share/plasma/look-and-feel/org.ubuntustudio-dark.desktop/"
Cause:
KDE Frameworks 6 has a security restriction that prevents loading QML
files (even via symlinks) that resolve outside the currently active
look-and-feel theme directory. The installer service was attempting to
show a splash from org.ubuntustudio.desktop while org.ubuntustudio-
live.desktop was still active.
Fix:
Add a dedicated PostInstallSplash.qml and required images directly to the
org.ubuntustudio-live.desktop theme
Reorder ExecStopPost commands to show the splash before switching themes, while
the live theme is still active
** Affects: ubuntustudio-default-settings (Ubuntu)
Importance: High
Assignee: Erich Eickmeyer (eeickmeyer)
Status: In Progress
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https://bugs.launchpad.net/bugs/2146592
Title:
Post-installer splash screen fails due to KF6 path traversal check
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