A zlib security update has been released for Debian GNU/Linux 9 LTS to address an issue that could result in denial of service or potentially the execution of arbitrary code if specially crafted input is processed.

DLA 2968-1: zlib security update

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Debian LTS Advisory DLA-2968-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Anton Gladky
April 02, 2022   https://wiki.debian.org/LTS
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Package : zlib
Version : 1:1.2.8.dfsg-5+deb9u1
CVE ID : CVE-2018-25032
Debian Bug : 1008265

One security issue has been found in a compression library zlib.

Danilo Ramos discovered that incorrect memory handling in zlib's deflate
handling could result in denial of service or potentially the execution
of arbitrary code if specially crafted input is processed.

For Debian 9 stretch, this problem has been fixed in version
1:1.2.8.dfsg-5+deb9u1.

We recommend that you upgrade your zlib packages.

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

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