Bug 2492257 (CVE-2026-58016) - CVE-2026-58016 glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"
Summary: CVE-2026-58016 glib: integer underflow in gio/gdbusintrospection.c via "g_dbu...
Keywords:
Status: NEW
Alias: CVE-2026-58016
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2494887 2494886 2494888
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-24 17:34 UTC by OSIDB Bzimport
Modified: 2026-08-06 20:09 UTC (History)
6 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2026:46359 0 None None None 2026-07-27 00:08:10 UTC
Red Hat Product Errata RHBA-2026:46505 0 None None None 2026-07-27 10:56:54 UTC
Red Hat Product Errata RHBA-2026:46967 0 None None None 2026-07-27 21:28:42 UTC
Red Hat Product Errata RHBA-2026:47093 0 None None None 2026-07-28 14:41:35 UTC
Red Hat Product Errata RHBA-2026:47886 0 None None None 2026-07-29 13:27:46 UTC
Red Hat Product Errata RHSA-2026:42063 0 None None None 2026-07-20 16:12:34 UTC
Red Hat Product Errata RHSA-2026:42089 0 None None None 2026-07-20 20:18:25 UTC
Red Hat Product Errata RHSA-2026:42090 0 None None None 2026-07-20 17:42:16 UTC
Red Hat Product Errata RHSA-2026:49512 0 None None None 2026-08-03 01:47:19 UTC
Red Hat Product Errata RHSA-2026:51175 0 None None None 2026-08-06 20:09:49 UTC
Red Hat Product Errata RHSA-2026:51176 0 None None None 2026-08-06 18:03:51 UTC
Red Hat Product Errata RHSA-2026:51177 0 None None None 2026-08-06 19:39:23 UTC
Red Hat Product Errata RHSA-2026:51181 0 None None None 2026-08-06 18:12:56 UTC
Red Hat Product Errata RHSA-2026:51182 0 None None None 2026-08-06 18:39:14 UTC
Red Hat Product Errata RHSA-2026:51183 0 None None None 2026-08-06 18:17:51 UTC
Red Hat Product Errata RHSA-2026:51184 0 None None None 2026-08-06 18:10:50 UTC
Red Hat Product Errata RHSA-2026:51185 0 None None None 2026-08-06 18:11:43 UTC

Description OSIDB Bzimport 2026-06-24 17:34:43 UTC 
A state confusion vulnerability exists in g_dbus_node_info_new_for_xml() in gio/gdbusintrospection.c. When parsing malformed D-Bus introspection XML containing a <node> element nested inside <method>, <signal>, <property>, or <arg> elements, the parser's internal state becomes inconsistent. The nested </interface> closing tag inside the nested <node> steals and resets the shared data->methods (or data->signals/data->properties) array to an empty state. When the outer </method> (or similar) closing tag subsequently calls parse_data_get_method(data, FALSE), it accesses pdata[len - 1] with len == 0, causing an unsigned integer underflow (0u - 1 = 0xFFFFFFFF) and a massive out-of-bounds heap read at offset 0xFFFFFFFF * sizeof(gpointer) (~8 GB before the buffer).
Comment 3 errata-xmlrpc 2026-07-20 16:12:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:42063 https://access.redhat.com/errata/RHSA-2026:42063
Comment 4 errata-xmlrpc 2026-07-20 17:42:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:42090 https://access.redhat.com/errata/RHSA-2026:42090
Comment 5 errata-xmlrpc 2026-07-20 20:18:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:42089 https://access.redhat.com/errata/RHSA-2026:42089
Comment 8 errata-xmlrpc 2026-08-03 01:47:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:49512 https://access.redhat.com/errata/RHSA-2026:49512
Comment 9 errata-xmlrpc 2026-08-06 18:03:49 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:51176 https://access.redhat.com/errata/RHSA-2026:51176
Comment 10 errata-xmlrpc 2026-08-06 18:10:49 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:51184 https://access.redhat.com/errata/RHSA-2026:51184
Comment 11 errata-xmlrpc 2026-08-06 18:11:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:51185 https://access.redhat.com/errata/RHSA-2026:51185
Comment 12 errata-xmlrpc 2026-08-06 18:12:55 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:51181 https://access.redhat.com/errata/RHSA-2026:51181
Comment 13 errata-xmlrpc 2026-08-06 18:17:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:51183 https://access.redhat.com/errata/RHSA-2026:51183
Comment 14 errata-xmlrpc 2026-08-06 18:39:13 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:51182 https://access.redhat.com/errata/RHSA-2026:51182
Comment 15 errata-xmlrpc 2026-08-06 19:39:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:51177 https://access.redhat.com/errata/RHSA-2026:51177
Comment 16 errata-xmlrpc 2026-08-06 20:09:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

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