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.
https://bugzilla.redhat.com/show_bug.cgi?id=2492257
https://access.redhat.com/security/cve/CVE-2026-58016
https://access.redhat.com/errata/RHSA-2026:53371
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