Debian LTS: DLA-3181-1: sudo security update
Summary
A local unprivileged user may have been able to perform arbitrary
directory-existence tests by exploiting a race condition in sudoedit.
For Debian 10 buster, this problem has been fixed in version
1.8.27-1+deb10u4.
We recommend that you upgrade your sudo packages.
For the detailed security status of sudo please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/sudo
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS