Alerts This Week
Warning Icon 1 1,154
Alerts This Week
Warning Icon 1 1,154

Ubuntu 25.04: libcpanel-json-xs-perl Critical DoS USN-7749-1 CVE-2025-40929

ubuntu
Calendar Grey September 15, 2025
Dist Ubuntu Esm H88
Ubuntu Security Advisory USN-7750-1 identifies a severe vulnerability in libexample-json-xs-perl that necessitates immediate patching.
Cpanel-JSON-XS could be made to crash if it parsed specially crafted JSON.

Summary

Cpanel-JSON-XS could be made to crash if it parsed specially crafted JSON.

Software Description:

- libcpanel-json-xs-perl: module for fast and correct serialising to JSON

Details:

It was discovered that Cpanel-JSON-XS incorrectly handled parsing certain

JSON data. An attacker could possibly use this issue to cause

Cpanel-JSON-XS to crash, resulting in a denial of service.

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu json issue libcpanel-json-xs-perl

Update Instructions

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

Ubuntu 25.04
  libcpanel-json-xs-perl          4.39-1ubuntu0.1

Ubuntu 24.04 LTS
  libcpanel-json-xs-perl          4.37-1ubuntu0.1

Ubuntu 22.04 LTS
  libcpanel-json-xs-perl          4.27-1ubuntu0.2

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

References

https://ubuntu.com/security/notices/USN-7749-1

CVE-2025-40929

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7749-1

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu json issue libcpanel-json-xs-perl

Package Information

https://launchpad.net/ubuntu/+source/libcpanel-json-xs-perl/4.39-1ubuntu0.1
https://launchpad.net/ubuntu/+source/libcpanel-json-xs-perl/4.27-1ubuntu0.2

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here