Public bug reported:
After upgrading from Ubuntu/Kubuntu 18.04 LTS via 24.04 LTS to 26.04 LTS,
Ghostscript can no longer read PDF files located on removable media
mounted by udisks2 under
/run/media/$USER/...
Example:
gs -sDEVICE=pdfwrite -o /tmp/out.pdf input.pdf
fails with
Error: /undefinedfilename
Last OS error: Permission denied
The file exists and is readable.
Other applications (pdfinfo, cp, file, LibreOffice, Okular) can read the
same file without any problems.
strace shows:
openat(..., "input.pdf", O_RDONLY) = -1 EACCES
The kernel log shows:
apparmor="DENIED"
profile="gs"
The AppArmor profile
/etc/apparmor.d/gs
contains:
owner file rw /media/*/**.@{gs_file_ext},
but does not allow
/run/media/*/**.@{gs_file_ext},
Adding
owner file rw /run/media/*/**.@{gs_file_ext},
to
/etc/apparmor.d/local/gs
and reloading the profile fixes the problem immediately.
This appears to be a regression after the move from /media to
/run/media for removable media.
** Affects: ghostscript (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2161994
Title:
AppArmor profile "gs" denies access to PDF files mounted under
/run/media
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