Critical Update Required: tzdata Package Vulnerability in Debian 11

tzdata Updated 02 Oct 2025

Summary

28/11/2024
N/A
Yes i
Unrated
Not published

DLA-3972-1: tzdata - new timezone database. Affects tzdata versions < 2024b-0+deb11u1. Fixed in 2024b-0+deb11u1. How to fix ↓

Free scan

Check if this vulnerability affects your application

Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.

Check my app free

No signup required · Results in about 60 seconds

Upload your dependency manifest or SBOM

Drag & drop your file here or

Java Javascript PHP Python Go Rust Ruby Dart C/C++ Elixir CycloneDX SPDX

Upload a supported dependency manifest or SBOM. No installation or source-code access required.

See supported files and SBOM formats
SBOM sbom.json · bom.json · bom.xml · *.spdx.json · *.cdx.json · *.cdx.xml
Java pom.xml · gradle.lockfile · buildscript-gradle.lockfile
Javascript package-lock.json · yarn.lock · pnpm-lock.yaml
PHP composer.lock
Python poetry.lock · requirements.txt · Pipfile.lock
Go go.mod
Rust Cargo.lock
Ruby Gemfile.lock
Dart pubspec.lock
C/C++ conan.lock
Elixir mix.lock
Enter your work email to receive your report link.

Verify your email to view the full report and start 30 days of continuous monitoring. No credit card required.

Sponsored Lume, the Habilume companion Habilume Habit tracker with a companion that grows with you Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent. App Store Google Play

Background

The tzdata package provides the time zone database for various systems, ensuring that applications can accurately reflect local time across different regions. It is crucial for scheduling, logging, and time-sensitive operations. The package is regularly updated to reflect changes in time zone rules, which can be influenced by legal or political decisions.

Vulnerability Detail

The tzdata package has been identified with a vulnerability that arises from outdated time zone information. This can lead to incorrect time calculations, which may affect applications relying on accurate time data. The vulnerability is particularly critical as it can disrupt scheduling and logging functionalities, potentially leading to data integrity issues and operational disruptions. The specific vulnerability was introduced in earlier versions and has been addressed in the latest update.

How To Fix

Minimum fixed version

2024b-0+deb11u1

This is the first release that contains the fix.

sudo apt-get install --only-upgrade tzdata

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

Workaround

Currently, there are no specific workarounds for this vulnerability other than updating the tzdata package to the latest version. Users should ensure that their systems are regularly updated to avoid potential issues.

Conclusion

The tzdata package vulnerability in Debian 11 requires immediate attention to ensure accurate time management across applications. Users are advised to update to the latest version to mitigate any risks associated with outdated time zone information.

See every vulnerability recorded for tzdata →

Share this vulnerability

FAQ

tzdata is a package that contains the time zone database, which is essential for applications to manage time accurately across different regions.

Updating tzdata is crucial to ensure that your system reflects the most current time zone rules, preventing potential scheduling and logging errors.

You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.

Failure to update tzdata may result in incorrect time calculations, leading to operational disruptions and data integrity issues.

Yes, Vulert can monitor and alert you in real-time for open-source vulnerabilities using just a manifest file like package-lock.json.

Related vulnerabilities

Recent vulnerabilities recorded for tzdata.

Sponsored Lume, the Habilume companion Habilume Habit tracker with a companion that grows with you Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent. App Store Google Play

How To Fix

Minimum fixed version

2024b-0+deb11u1

This is the first release that contains the fix.

sudo apt-get install --only-upgrade tzdata

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

Subscribe to Vulert on Telegram
Daily digest of new CVEs, critical and high severity, affected packages and fixes — plus a weekly roundup.
Join the channel →
Help improve this record
Report an issue or send feedback