CVE-2025-40928

Publication date 8 September 2025

Last updated 16 September 2025

Ubuntu priority

Cvss 3 Severity Score

JSON::XS before version 4.04 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libjson-xs-perl	25.04 plucky	Fixed 4.040-0ubuntu0.25.04.1
	24.04 LTS noble	Fixed 4.040-0ubuntu0.24.04.1
	22.04 LTS jammy	Fixed 4.040-0ubuntu0.22.04.1
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation
	14.04 LTS trusty	Needs evaluation

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)