Public bug reported:
A new minimal install of Ubuntu Server 24.04 has started giving a W
message on completion of all installs:
W: Download is performed unsandboxed as root as file
'/var/cache/apt/archives/partial/<PACKAGE_NAME>' couldn't be accessed by
user '_apt'. - pkgAcquire::Run (13: Permission denied)
This seems to be spurious, as on checking
/var/cache/apt/archives/partial has correct _apt:root ownership, mode
700.
I have set ownership on everything from /var/cache/apt down to
_apt:root, but it makes no difference - the warning continues to be
emitted on all installs, using both apt and apt-get.
From widespread discussion I've found online, this seems to be a common
issue with no obvious cause or solution other than to make root the
sandbox user in /etc/apt/apt.conf.d, which seem to me to not be a
solution at all! I agree that _apt should be used with reduced
privileges for downlaoading, but it seems that something in the changes
you made to implement this is broken.
I'll attach my ubuntu-bug report here, as the machine which generated it
is headless.
Thanks
Colin
** Affects: apt (Ubuntu)
Importance: Undecided
Status: New
** Tags: apt download install permissions warning
** Attachment added: "ubuntu-bug report"
https://bugs.launchpad.net/bugs/2079785/+attachment/5813842/+files/apport.apt.c0blqzu2.apport
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https://bugs.launchpad.net/bugs/2079785
Title:
apt / apt-get install produce spurious Warning
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