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A bind9 security update has been released for Debian GNU/Linux 10 LTS to address an issue that results in potential denial of service.

[SECURITY] [DLA 3498-1] bind9 security update

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Debian LTS Advisory DLA-3498-1 Chris Lamb
July 18, 2023
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Package : bind9
Version : 1:9.11.5.P4+dfsg-5.1+deb10u9
CVE ID : CVE-2023-2828

It was discovered that there was a potential denial of service (DoS)
in bind9, the popular Domain Name Server (DNS) server.

Shoham Danino, Anat Bremler-Barr, Yehuda Afek and Yuval Shavitt
discovered that a flaw in the cache-cleaning algorithm used in named
can cause that named's configured cache size limit can be
significantly exceeded, potentially resulting in a denial of service

For Debian 10 buster, this problem has been fixed in version

We recommend that you upgrade your bind9 packages.

For the detailed security status of bind9 please refer to
its security tracker page at:

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: