The attachment "Potential fix for the described issue." seems to be a
patch.  If it isn't, please remove the "patch" flag from the attachment,
remove the "patch" tag, and if you are a member of the ~ubuntu-
reviewers, unsubscribe the team.

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** Tags added: patch

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https://bugs.launchpad.net/bugs/2081762

Title:
  lxc-excecute NULL pointer dereference causes segfault when sharing
  rootfs with host

Status in lxc package in Ubuntu:
  New

Bug description:
  lsb_release -rd:
  Description:  Ubuntu 24.04.1 LTS
  Release:      24.04

  lxc-start --version: 5.0.3

  Issue: lxc-execute segfaults when using a shared host rootfs due to a
  NULL pointer deference.

  In lxc/src/lxc/conf.c - lines 339 - 344

  The call to lxc_storage_prepare detects no rootfs path and returns
  without calling storage_init

  In lxc/src/lxc/conf.c - lines 293 - 310

  leaving rootfs->storage null.

  Then dereferencing rootfs->storage->type causes a segfault.

  
  Steps to reproduce:
  1. use lxc.conf:
     lxc.uts.name=lxc-test-1
     lxc.net.0.type = empty
     lxc.console.path = none
     lxc.tty.max = 1
     lxc.pty.max = 128
     lxc.mount.auto = proc:rw sys cgroup
     lxc.autodev = 1

  2. Run:
     $ sudo lxc-execute -n lxc-test-1 -f lxc.conf  -l TRACE -- ls /dev 
     Segmentation fault
     
  I've attached a patch as a possible fix.  Running the same example above with 
the patch applied runs without crashing.

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