A needrestart security update has been released for Debian GNU/Linux 9 LTS to address a local privilege escalation.

DLA 3013-1: needrestart security update

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Debian LTS Advisory DLA-3013-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Utkarsh Gupta
May 18, 2022   https://wiki.debian.org/LTS
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Package : needrestart
Version : 2.11-3+deb9u2
CVE ID : CVE-2022-30688
Debian Bug : 1011154

Jakub Wilk discovered a local privilege escalation in needrestart, a
utility to check which daemons need to be restarted after library
upgrades. Regular expressions to detect the Perl, Python, and Ruby
interpreters are not anchored, allowing a local user to escalate
privileges when needrestart tries to detect if interpreters are using
old source files.

For Debian 9 stretch, this problem has been fixed in version
2.11-3+deb9u2.

We recommend that you upgrade your needrestart packages.

For the detailed security status of needrestart please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/needrestart

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