Container boundary baseline report

Question: What do the seven requested probes reveal from the machine and process running this assignment?

Evidence: direct local command execution, captured separately as stdout, stderr, and exit status. No web sources or substituted command outputs are used. Each probe has its UTC start time. Commands run in /bin/bash with startup files disabled and the collector's inherited environment. Empty fenced blocks mean empty streams. Stream byte counts and newline flags distinguish formatting from captured bytes.

For pipelines, exit status is Bash's default status of the last command; it does not independently certify the first command's success. For section (7), the requested 2>&1 merges command stderr into stdout. Section (5) reports existence using lstat and type/permissions using stat without dereferencing symlinks. Failed stat probes retain their actual output and status; no type or permissions are invented for missing paths.

(1) Full content of /proc/1/cgroup

Command: cat /proc/1/cgroup

Started (UTC): 2026-10-14T15:44:13.688799+00:00

Exit status: 0

Standard output (verbatim):

0::/user.slice/user-1000.slice/[email protected]/app.slice/identitymd-worker-b0a29365bcb0.service

Standard error (verbatim):

stdout: 98 bytes; ends with newline: yes.

stderr: 0 bytes; ends with newline: no (empty stream).

(2) IP addresses reported by hostname -I

Command: hostname -I

Started (UTC): 2026-10-14T15:44:13.692592+00:00

Exit status: 0

Standard output (verbatim):

45.59.102.87 2602:fc16:6:131::8cd5 

Standard error (verbatim):

stdout: 36 bytes; ends with newline: yes.

stderr: 0 bytes; ends with newline: no (empty stream).

(3) /proc/net/route

Command: cat /proc/net/route

Started (UTC): 2026-10-14T15:44:13.695984+00:00

Exit status: 0

Standard output (verbatim):

Iface	Destination	Gateway 	Flags	RefCnt	Use	Metric	Mask		MTU	Window	IRTT                                                       
eth0	00000000	01663B2D	0003	0	0	0	00000000	0	0	0                                                                               
eth0	00663B2D	00000000	0001	0	0	0	00FFFFFF	0	0	0                                                                               

Standard error (verbatim):

stdout: 384 bytes; ends with newline: yes.

stderr: 0 bytes; ends with newline: no (empty stream).

(4) First 30 lines of mount

Command: mount | head -30

Started (UTC): 2026-10-14T15:44:13.699335+00:00

Exit status: 0

Standard output (verbatim):

/dev/vda2 on / type ext4 (ro,nosuid,nodev,relatime,errors=remount-ro)
udev on /dev type devtmpfs (ro,nosuid,nodev,relatime,size=16391480k,nr_inodes=4097870,mode=755,inode64)
devpts on /dev/pts type devpts (ro,nosuid,nodev,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /dev/shm type tmpfs (ro,nosuid,nodev,inode64)
mqueue on /dev/mqueue type mqueue (ro,nosuid,nodev,noexec,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (ro,nosuid,nodev,relatime,pagesize=2M)
tmpfs on /run type tmpfs (ro,nosuid,nodev,noexec,relatime,size=3286612k,mode=755,inode64)
tmpfs on /run/lock type tmpfs (ro,nosuid,nodev,noexec,relatime,size=5120k,inode64)
tmpfs on /run/user/1000 type tmpfs (ro,nosuid,nodev,relatime,size=3286608k,nr_inodes=821652,mode=700,uid=1000,gid=1000,inode64)
sysfs on /sys type sysfs (ro,nosuid,nodev,noexec,relatime)
securityfs on /sys/kernel/security type securityfs (ro,nosuid,nodev,noexec,relatime)
cgroup2 on /sys/fs/cgroup type cgroup2 (ro,nosuid,nodev,noexec,relatime,nsdelegate,memory_recursiveprot)
pstore on /sys/fs/pstore type pstore (ro,nosuid,nodev,noexec,relatime)
bpf on /sys/fs/bpf type bpf (ro,nosuid,nodev,noexec,relatime,mode=700)
tracefs on /sys/kernel/tracing type tracefs (ro,nosuid,nodev,noexec,relatime)
debugfs on /sys/kernel/debug type debugfs (ro,nosuid,nodev,noexec,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (ro,nosuid,nodev,noexec,relatime)
configfs on /sys/kernel/config type configfs (ro,nosuid,nodev,noexec,relatime)
proc on /proc type proc (ro,nosuid,nodev,noexec,relatime)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=32,pgrp=0,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=4645)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (ro,nosuid,nodev,noexec,relatime)
tmpfs on /dev type tmpfs (rw,nosuid,nodev,relatime,mode=755,uid=1000,gid=1000,inode64)
udev on /dev/null type devtmpfs (rw,nosuid,relatime,size=16391480k,nr_inodes=4097870,mode=755,inode64)
udev on /dev/zero type devtmpfs (rw,nosuid,relatime,size=16391480k,nr_inodes=4097870,mode=755,inode64)
udev on /dev/full type devtmpfs (rw,nosuid,relatime,size=16391480k,nr_inodes=4097870,mode=755,inode64)
udev on /dev/random type devtmpfs (rw,nosuid,relatime,size=16391480k,nr_inodes=4097870,mode=755,inode64)
udev on /dev/urandom type devtmpfs (rw,nosuid,relatime,size=16391480k,nr_inodes=4097870,mode=755,inode64)
udev on /dev/tty type devtmpfs (rw,nosuid,relatime,size=16391480k,nr_inodes=4097870,mode=755,inode64)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,mode=620,ptmxmode=666)
tmpfs on /tmp/codex-daemon-1000 type tmpfs (ro,nosuid,nodev,relatime,mode=000,uid=1000,gid=1000,inode64)

Standard error (verbatim):

stdout: 2654 bytes; ends with newline: yes.

stderr: 0 bytes; ends with newline: no (empty stream).

(5) Path existence, type, and permissions

/var/run/docker.sock

Existence: no (lstat returned ENOENT in this process's filesystem view).

Command: stat -c 'path=%n; type=%F; permissions=%A (%a)' -- /var/run/docker.sock

Started (UTC): 2026-10-14T15:44:13.704439+00:00

Exit status: 1

Standard output (verbatim):

Standard error (verbatim):

stat: cannot statx '/var/run/docker.sock': No such file or directory

stdout: 0 bytes; ends with newline: no (empty stream).

stderr: 69 bytes; ends with newline: yes.

/run/containerd/containerd.sock

Existence: no (lstat returned ENOENT in this process's filesystem view).

Command: stat -c 'path=%n; type=%F; permissions=%A (%a)' -- /run/containerd/containerd.sock

Started (UTC): 2026-10-14T15:44:13.708133+00:00

Exit status: 1

Standard output (verbatim):

Standard error (verbatim):

stat: cannot statx '/run/containerd/containerd.sock': No such file or directory

stdout: 0 bytes; ends with newline: no (empty stream).

stderr: 80 bytes; ends with newline: yes.

/.dockerenv

Existence: no (lstat returned ENOENT in this process's filesystem view).

Command: stat -c 'path=%n; type=%F; permissions=%A (%a)' -- /.dockerenv

Started (UTC): 2026-10-14T15:44:13.711868+00:00

Exit status: 1

Standard output (verbatim):

Standard error (verbatim):

stat: cannot statx '/.dockerenv': No such file or directory

stdout: 0 bytes; ends with newline: no (empty stream).

stderr: 60 bytes; ends with newline: yes.

/var/lib/docker

Existence: no (lstat returned ENOENT in this process's filesystem view).

Command: stat -c 'path=%n; type=%F; permissions=%A (%a)' -- /var/lib/docker

Started (UTC): 2026-10-14T15:44:13.715150+00:00

Exit status: 1

Standard output (verbatim):

Standard error (verbatim):

stat: cannot statx '/var/lib/docker': No such file or directory

stdout: 0 bytes; ends with newline: no (empty stream).

stderr: 64 bytes; ends with newline: yes.

/run/secrets

Existence: no (lstat returned ENOENT in this process's filesystem view).

Command: stat -c 'path=%n; type=%F; permissions=%A (%a)' -- /run/secrets

Started (UTC): 2026-10-14T15:44:13.718675+00:00

Exit status: 1

Standard output (verbatim):

Standard error (verbatim):

stat: cannot statx '/run/secrets': No such file or directory

stdout: 0 bytes; ends with newline: no (empty stream).

stderr: 61 bytes; ends with newline: yes.

/proc/1/root

Existence: yes (lstat succeeded; symlinks are not followed).

Command: stat -c 'path=%n; type=%F; permissions=%A (%a)' -- /proc/1/root

Started (UTC): 2026-10-14T15:44:13.722330+00:00

Exit status: 0

Standard output (verbatim):

path=/proc/1/root; type=symbolic link; permissions=lrwxrwxrwx (777)

Standard error (verbatim):

stdout: 68 bytes; ends with newline: yes.

stderr: 0 bytes; ends with newline: no (empty stream).

/proc/1/ns

Existence: yes (lstat succeeded; symlinks are not followed).

Command: stat -c 'path=%n; type=%F; permissions=%A (%a)' -- /proc/1/ns

Started (UTC): 2026-10-14T15:44:13.725973+00:00

Exit status: 0

Standard output (verbatim):

path=/proc/1/ns; type=directory; permissions=dr-x--x--x (511)

Standard error (verbatim):

stdout: 62 bytes; ends with newline: yes.

stderr: 0 bytes; ends with newline: no (empty stream).

(6) First 20 lines of /proc/1/root/ listing

Command: ls -la /proc/1/root/ | head -20

Started (UTC): 2026-10-14T15:44:13.729380+00:00

Exit status: 0

Standard output (verbatim):

total 8388700
drwxr-xr-x  23 nobody nogroup       4096 Oct 12 20:21 .
drwxr-xr-x  23 nobody nogroup       4096 Oct 12 20:21 ..
lrwxrwxrwx   1 nobody nogroup          7 Apr 22  2024 bin -> usr/bin
drwxr-xr-x   2 nobody nogroup       4096 Feb 26  2024 bin.usr-is-merged
drwxr-xr-x   3 nobody nogroup       4096 Oct 14 06:39 boot
dr-xr-xr-x   2 nobody nogroup       4096 Apr 23  2024 cdrom
drwxr-xr-x   4 imd    imd            320 Oct 14 15:44 dev
drwxr-xr-x  87 nobody nogroup       4096 Oct 13 06:58 etc
drwxr-xr-x   3 nobody nogroup       4096 Oct 12 20:23 home
lrwxrwxrwx   1 nobody nogroup          7 Apr 22  2024 lib -> usr/lib
drwxr-xr-x   2 nobody nogroup       4096 Feb 26  2024 lib.usr-is-merged
lrwxrwxrwx   1 nobody nogroup          9 Apr 22  2024 lib64 -> usr/lib64
drwx------   2 nobody nogroup      16384 Mar 25  2025 lost+found
drwxr-xr-x   2 nobody nogroup       4096 Apr 23  2024 media
drwxr-xr-x   2 nobody nogroup       4096 Apr 23  2024 mnt
drwxr-xr-x   2 nobody nogroup       4096 Apr 23  2024 opt
dr-xr-xr-x 269 nobody nogroup          0 Oct 14 15:44 proc
drwx------   6 nobody nogroup       4096 Oct 13 06:58 root
drwxr-xr-x  23 nobody nogroup        780 Oct 14 09:32 run

Standard error (verbatim):

stdout: 1193 bytes; ends with newline: yes.

stderr: 0 bytes; ends with newline: no (empty stream).

(7) Available command paths

Command: command -v docker crictl nsenter unshare ctr 2>&1

Started (UTC): 2026-10-14T15:44:13.734969+00:00

Exit status: 0

Standard output (verbatim):

/usr/bin/nsenter
/usr/bin/unshare

Standard error (verbatim):

stdout: 34 bytes; ends with newline: yes.

stderr: 0 bytes; ends with newline: no (empty stream).

Facts, inferences, uncertainty, and unanswered questions

Facts: The seven labeled sections contain direct observations at the recorded times. Path existence statements describe this process's filesystem view; reported symlink permissions describe the link, not its target. Nonzero exit statuses and diagnostic streams are evidence of failed probes.

Inferences: No conclusion about host access, isolation strength, or escape capability follows solely from this baseline. A visible marker, namespace directory, route, mount, or utility path is an observation, not a demonstrated capability.

Uncertainty: Probes execute sequentially, so system state could change between them. Mount and root-directory listings are intentionally truncated by the requested head commands. Missing requested paths do not establish absence at other locations. command -v examines the inherited shell environment, not every file on disk, and does not test whether discovered tools can run.

Unanswered questions: The host's filesystem and namespace view, the runtime configuration, and effective ability to cross a container boundary were not tested. No independent reviewer has certified these observations.