A ruby-nokogiri security update has been released for Debian GNU/Linux 9 LTS to address a potential denial of service attack.

DLA 3003-1: ruby-nokogiri security update

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Debian LTS Advisory DLA-3003-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Chris Lamb
May 13, 2022   https://wiki.debian.org/LTS
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Package : ruby-nokogiri
Version : 1.6.8.1-1+deb9u2
CVE ID : CVE-2022-24836
Debian Bug : #1009787

It was discovered that there was a potential denial of service attack
in ruby-nokogiri, a HTML, XML, SAX etc. parser written in/for the Ruby
programming language. This was caused by the use of inefficient
regular expressions that were susceptible to excessive backtracking.

For Debian 9 "Stretch", this problem has been fixed in version
1.6.8.1-1+deb9u2.

We recommend that you upgrade your ruby-nokogiri packages.

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

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