An emacs security update has been released for Debian GNU/Linux 10 LTS to address an issue where attackers could have executed arbitrary commands via shell metacharacters in the name of a source-code file.

DLA 3257-1: emacs security update

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Debian LTS Advisory DLA-3257-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Chris Lamb
December 31, 2022   https://wiki.debian.org/LTS
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Package : emacs
Version : 1:26.1+1-3.2+deb10u3
CVE ID : CVE-2022-45939
Debian Bug : 1025009

It was discovered that there was an issue in Emacs where where
attackers could have executed arbitrary commands via shell
metacharacters in the name of a source-code file.

This was because lib-src/etags.c used the system(3) library function
when calling the (external) ctags(1) binary.

For Debian 10 buster, this problem has been fixed in version
1:26.1+1-3.2+deb10u3.

We recommend that you upgrade your emacs packages.

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

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