CVE-2026-58016

critical

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.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2492257

https://access.redhat.com/security/cve/CVE-2026-58016

https://access.redhat.com/errata/RHSA-2026:74674

https://access.redhat.com/errata/RHSA-2026:74463

https://access.redhat.com/errata/RHSA-2026:74462

https://access.redhat.com/errata/RHSA-2026:74461

https://access.redhat.com/errata/RHSA-2026:74460

https://access.redhat.com/errata/RHSA-2026:74459

https://access.redhat.com/errata/RHSA-2026:74458

https://access.redhat.com/errata/RHSA-2026:73962

https://access.redhat.com/errata/RHSA-2026:73961

https://access.redhat.com/errata/RHSA-2026:73960

https://access.redhat.com/errata/RHSA-2026:73959

https://access.redhat.com/errata/RHSA-2026:73909

https://access.redhat.com/errata/RHSA-2026:72502

https://access.redhat.com/errata/RHSA-2026:72476

https://access.redhat.com/errata/RHSA-2026:72475

https://access.redhat.com/errata/RHSA-2026:72470

https://access.redhat.com/errata/RHSA-2026:72399

https://access.redhat.com/errata/RHSA-2026:72395

https://access.redhat.com/errata/RHSA-2026:72394

https://access.redhat.com/errata/RHSA-2026:58981

https://access.redhat.com/errata/RHSA-2026:53371

https://access.redhat.com/errata/RHSA-2026:51185

https://access.redhat.com/errata/RHSA-2026:51184

https://access.redhat.com/errata/RHSA-2026:51183

https://access.redhat.com/errata/RHSA-2026:51182

https://access.redhat.com/errata/RHSA-2026:51181

https://access.redhat.com/errata/RHSA-2026:51177

https://access.redhat.com/errata/RHSA-2026:51176

https://access.redhat.com/errata/RHSA-2026:51175

https://access.redhat.com/errata/RHSA-2026:49512

https://access.redhat.com/errata/RHSA-2026:46836

https://access.redhat.com/errata/RHSA-2026:44481

https://access.redhat.com/errata/RHSA-2026:42090

https://access.redhat.com/errata/RHSA-2026:42089

https://access.redhat.com/errata/RHSA-2026:42063

Details

Source: Mitre, NVD

Published: 2026-06-30

Updated: 2026-10-02

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:C

Severity: High

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Severity: Critical

EPSS

EPSS: 0.00545