CVE-2026-58016
Glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"
- Published
- Updated
- Reserved
- Assigned by
- redhat
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.56% · top 53% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
- affected < 2.89.0
Red Hat · Red Hat Enterprise Linux 10
- unaffected 0:2.80.4-12.el10_2.14 – < *
Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Support
- unaffected 0:2.80.4-4.el10_0.10 – < *
Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle Support
- unaffected 0:2.56.1-13.el7_9 – < *
Red Hat · Red Hat Enterprise Linux 8
- unaffected 0:2.70.1-9.el8_10 – < *
Red Hat · Red Hat Enterprise Linux 8
- unaffected 0:2.56.4-170.el8_10 – < *
Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
- unaffected 0:2.56.4-10.el8_4.6 – < *
Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
- unaffected 0:2.56.4-10.el8_4.6 – < *
Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
- unaffected 0:2.56.4-158.el8_6.6 – < *
Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
- unaffected 0:2.56.4-158.el8_6.6 – < *
Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Service
- unaffected 0:2.56.4-165.el8_8.1 – < *
Red Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
- unaffected 0:2.56.4-165.el8_8.1 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:2.68.4-19.el9_8.2 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:2.68.4-19.el9_8.2 – < *
Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
- unaffected 0:2.68.4-7.el9_2.6 – < *
Red Hat · Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
- unaffected 0:2.68.4-14.el9_4.7 – < *
Red Hat · Red Hat Enterprise Linux 9.6 Extended Update Support
- unaffected 0:2.68.4-16.el9_6.6 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.17
- unaffected 1791371080 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.17
- unaffected 1791371069 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.17
- unaffected 1791788287 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.17
- unaffected 1791378395 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.17
- unaffected 1791970484 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.18
- unaffected 1791459707 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.18
- unaffected 1791459711 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.18
- unaffected 1791459759 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.18
- unaffected 1789029076 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.18
- unaffected 1791966259 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.20
- unaffected 1790223279 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.20
- unaffected 1790223719 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.20
- unaffected 1790272426 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.20
- unaffected 1790589998 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.20
- unaffected 1790589912 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.20
- unaffected 1790589914 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.20
- unaffected 1790589855 – < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.20
- unaffected 1790598593 – < *
- unaffected 1784821670 – < *
- unaffected 1784821750 – < *
Red Hat · Red Hat Insights proxy 1.5
- unaffected 1786433656 – < *
Red Hat · Red Hat OpenShift AI 3.0
- unaffected 1790276886 – < *
Red Hat · Red Hat OpenShift AI 3.0
- unaffected 1790276884 – < *
Red Hat · Red Hat OpenShift AI 3.0
- unaffected 1790277045 – < *
Red Hat · Red Hat OpenShift AI 3.0
- unaffected 1790276889 – < *
Red Hat · Red Hat OpenShift AI 3.0
- unaffected 1790276974 – < *
Red Hat · Red Hat OpenShift AI 3.2
- unaffected 1790703497 – < *
Red Hat · Red Hat OpenShift AI 3.2
- unaffected 1790703506 – < *
Red Hat · Red Hat OpenShift AI 3.2
- unaffected 1790703590 – < *
Red Hat · Red Hat OpenShift AI 3.2
- unaffected 1790703568 – < *
Red Hat · Red Hat OpenShift AI 3.2
- unaffected 1790703586 – < *
Red Hat · Red Hat OpenShift AI 3.2
- unaffected 1790703494 – < *
Red Hat · Red Hat OpenShift AI 3.4
- unaffected 1790703542 – < *
Red Hat · Red Hat Update Infrastructure 5
- unaffected 1784794818 – < *
Red Hat · Red Hat Update Infrastructure 5
- unaffected 1784794778 – < *
Red Hat · Red Hat Update Infrastructure 5
- unaffected 1784795112 – < *
Red Hat · Red Hat Update Infrastructure 5
- unaffected 1784794289 – < *
Red Hat · Red Hat Update Infrastructure 5
- unaffected 1784795076 – < *
Red Hat · Red Hat Update Infrastructure 5
- unaffected 1787241211 – < *
Red Hat · Red Hat Update Infrastructure 5
- unaffected 1787135742 – < *
Red Hat · Red Hat Update Infrastructure 5
- unaffected 1787241260 – < *
Red Hat · Red Hat Enterprise Linux 10
All versions: affected
Red Hat · Red Hat Enterprise Linux 6
All versions: affected
Red Hat · Red Hat Enterprise Linux 9
All versions: affected
Red Hat · Red Hat Hardened Images
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
What to do
Workaround: To mitigate this vulnerability, implement input validation to sanitize untrusted D-Bus introspection XML, specifically rejecting malformed structures such as <node> elements improperly nested within <method>, <signal>, <property> or <arg> elements before calling g_dbus_node_info_new_for_xml(). Alternatively, restricting the application to only process XML input from trusted, authenticated sources will completely neutralize this issue.
References (46)
- RHSA-2026:42063 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:42089 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:42090 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:44481 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:46836 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:49512 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:51175 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:51176 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:51177 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:51181 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:51182 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:51183 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:51184 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:51185 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:53371 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:58981 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:72394 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:72395 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:72399 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:72470 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:72475 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:72476 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:72502 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:73909 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:73959 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:73960 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:73961 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:73962 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:74458 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:74459 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:74460 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:74461 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:74462 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:74463 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:74674 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:82304 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:82322 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:82336 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:82347 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:82354 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:82372 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:82857 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:82888 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-58016 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2492257 (opens in a new tab)issue-trackingx_refsource_REDHAT
- https://gitlab.gnome.org/GNOME/glib/-/issues/3932 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-58016)Record last updated .