Package: klibc-utils Version: 2.0.7-1 Severity: normal root@sevm:~/pol# /usr/lib/klibc/bin/fstype < /dev/sda2 Segmentation fault root@sevm:~/pol# execstack -c /usr/lib/klibc/bin/fstype root@sevm:~/pol# /usr/lib/klibc/bin/fstype < /dev/sda2 FSTYPE=btrfs FSSIZE=719360278528
The fstype program is listed as needing an executable stack, which will cause it to crash when run on a system with a security policy preventing executable stacke. If you clear the execstack bit it appears to work correctly. https://akkadia.org/drepper/nonselsec.pdf Page 8 of Ulrich Drepper's document about non-SE Linux security explains the options for dealing with this. -- System Information: Debian Release: bullseye/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 5.5.0-2-amd64 (SMP w/4 CPU cores) Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU:en (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: SELinux: enabled - Mode: Enforcing - Policy name: default Versions of packages klibc-utils depends on: ii libklibc 2.0.7-1 klibc-utils recommends no packages. klibc-utils suggests no packages. -- no debconf information -- debsums errors found: debsums: changed file /usr/lib/klibc/bin/fstype (from klibc-utils package)
