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Alerts This Week
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Ubuntu 25.10: USN-7844-1 Libyaml-syck-perl Important Info Exposure

ubuntu
Calendar Grey October 30, 2025
Dist Ubuntu Esm H88
Critical security notice for Ubuntu: libyaml-syck-perl exposes sensitive information. Urgent update recommended.
The system could be made to expose sensitive information.

Summary

The system could be made to expose sensitive information.

Software Description:

- libyaml-syck-perl: Perl module providing a fast, lightweight YAML loader and dumper

Details:

It was discovered that YAML::Syck did not properly handle parsing YAML

files. An attacker could possibly use this issue to expose sensitive

information.

Topics%20covered

Topics Covered

security advisory remote access Ubuntu important information exposure libyaml-syck-perl

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
  libyaml-syck-perl               1.34-3ubuntu0.1

Ubuntu 25.04
  libyaml-syck-perl               1.34-2ubuntu0.25.04.1

Ubuntu 24.04 LTS
  libyaml-syck-perl               1.34-2ubuntu0.24.04.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  libyaml-syck-perl               1.34-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  libyaml-syck-perl               1.31-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  libyaml-syck-perl               1.29-1ubuntu0.18.04.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  libyaml-syck-perl               1.29-1ubuntu0.16.04.1~esm1
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-7844-1

CVE-2025-11683

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7844-1

Topics%20covered

Topics Covered

security advisory remote access Ubuntu important information exposure libyaml-syck-perl

Package Information

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