Package: linux-image-4.9.0-6-amd64 Version: 4.9.82-1+deb9u3 When I attempt to get the environment of a process by reading /proc/[pid]/environ, it sometimes returns garbage.
The same garbage is seen when reading this magic 'environ' file using cat, hexdump, or python. So I believe the tool reading it is not at fault. I am filling this against a linux image package, because my understanding is that /proc is a virtual file system managed by the linux kernel. Reproducing: In my case I observed this with a couple sshd and dovecot processes, I suggest you start by looking at theses when reproducing. # cat /proc/10230/cmdline && echo dovecot/imap-login # cat /proc/10230/environ && echo ����������[TRUNCATED] # hexdump -C /proc/10230/environ 00000000 ab ab ab ab ab ab ab ab ab ab ab ab ab ab ab ab |................| * 000001fd # cat /proc/7590/cmdline && echo sshd: guillaume [priv] # cat /proc/7590/environ && echo riv]2 # hexdump -C /proc/7590/environ 00000000 72 69 76 5d 00 00 00 00 00 00 00 00 00 00 00 00 |riv]............| 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00000730 00 00 00 00 00 00 00 00 00 00 00 32 00 |...........2.|
