Integer overflow in Gnome Glib
CVE-2026-58016
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.
EPSS: 0.004 (36.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 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.
Affected products
- Gnome Glib — versions 0
- Red Hat Discovery 2 — versions 1784821670, 1784821750
- Red Hat Enterprise Linux 10 — versions 0:2.80.4-12.el10_2.14
- Red Hat Enterprise Linux 10.0 Extended Update Support — versions 0:2.80.4-4.el10_0.10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 7 Extended Lifecycle Support — versions 0:2.56.1-13.el7_9
- Red Hat Enterprise Linux 8 — versions 0:2.70.1-9.el8_10, 0:2.56.4-170.el8_10
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support — versions 0:2.56.4-10.el8_4.6
- Red Hat Enterprise Linux 8.4 Extended Update Support Long-life Add-on — versions 0:2.56.4-10.el8_4.6
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, Third Party Advisory, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Exploit, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
Frequently asked questions
- What is CVE-2026-58016?
- CVE-2026-58016 is a high-severity vulnerability in Gnome Glib, classified under Integer Underflow. CVSS score: 7.5/10. Published 2026-06-30.
- How severe is CVE-2026-58016?
- High severity. CVSS v3 base score is 7.5 out of 10.