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A python-cryptography security update has been released for Debian GNU/Linux 10 LTS to address a regression introduced by the previous update.

DLA 3331-2: python-cryptography security update

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Debian LTS Advisory DLA-3331-2 Chris Lamb
February 27, 2023
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Package : python-cryptography
Version : 2.6.1-3+deb10u4
CVE ID : CVE-2023-23931

It was discovered that there was a regression in the previous fix for
python-cryptography, a Python library offering a number of encryption
and cryptography primitives.

The original issue was that there was a potential memory corrution
vulnerability. However, the change introduced a regression due to
incorrectly backporting upstream's patch to the (older) version in
Debian LTS.

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

We recommend that you upgrade your python-cryptography packages.

For the detailed security status of python-cryptography 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: