Versions mentioned in the description apply to the upstream
Remediation section below for
Debian:10 relevant versions.
Stack-based buffer overflow in lib/sh/eaccess.c in GNU Bash before 4.2 patch 33 might allow local users to bypass intended restricted shell access via a long filename in /dev/fd, which is not properly handled when expanding the /dev/fd prefix.
bash to version 4.2-4 or higher.