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Debian 11: tzdata Important Leap Second Update DLA-4403-1

debian lts
Calendar Grey December 12, 2025
Dist Debian Esm H88
Update for tzdata includes leap second list changes and expiry date adjustment. Upgrade recommended for system stability.
This update includes the latest changes to the leap second list, including an update to its expiry date, which was set for the end of December
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Topics Covered

security advisory debian important system update tzdata leap second

Summary

For Debian 11 bullseye, this problem has been fixed in version
2025b-0+deb11u2.

We recommend that you upgrade your tzdata packages.

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

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


Severity
important
Lowest
Low
Medium
High
Critical

Package: tzdata
Version: 2025b-0+deb11u2

Topics%20covered

Topics Covered

security advisory debian important system update tzdata leap second

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