CVE-2026-58016

Publication date 30 June 2026

Last updated 21 September 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Description

A flaw was found in GLib. A state confusion issue exists in g_dbus_node_info_new_for_xml() in the gio/gdbusintrospection.c file when processing malformed D-Bus introspection XML, specifically with a `node` element nested within other elements like `method`, `signal`, `property` or `arg`. This issue can cause an unsigned integer overflow and lead to an out-of-bounds read, resulting in a denial of service.

Status

Package Ubuntu Release Status
glib2.0 26.04 LTS resolute
Fixed 2.88.0-1ubuntu0.1
25.10 questing Ignored end of life, was needs-triage
24.04 LTS noble
Fixed 2.80.0-6ubuntu3.9
22.04 LTS jammy
Fixed 2.72.4-0ubuntu2.10
20.04 LTS focal
Fixed 2.64.6-1~ubuntu20.04.9+esm2
18.04 LTS bionic
Fixed 2.56.4-0ubuntu0.18.04.9+esm6
16.04 LTS xenial
Fixed 2.48.2-0ubuntu4.8+esm6
14.04 LTS trusty
Fixed 2.40.2-0ubuntu1.1+esm8

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro 30-day free trial

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
glib2.0

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.5 · 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)

    • USN-8794-1
    • GLib vulnerabilities
    • 21 September 2026

Other references

Access our resources on patching vulnerabilities