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Vulnerability · Published Jun 30, 2026 · Assigned by redhat

CVE-2026-58016Glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"

High 7.5

In plain English

A high-severity security flaw in GLib from GNOME. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 53.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10glib22.80.4-12.el10_2.14ALSA-2026:42063
AlmaLinux:8glib22.56.4-170.el8_10ALSA-2026:42090
AlmaLinux:9glib22.68.4-19.el9_8.2ALSA-2026:42089
AlmaLinux:10glib2-devel2.80.4-12.el10_2.14ALSA-2026:42063
AlmaLinux:8glib2-devel2.56.4-170.el8_10ALSA-2026:42090
AlmaLinux:9glib2-devel2.68.4-19.el9_8.2ALSA-2026:42089
AlmaLinux:10glib2-doc2.80.4-12.el10_2.14ALSA-2026:42063
AlmaLinux:8glib2-doc2.56.4-170.el8_10ALSA-2026:42090
AlmaLinux:9glib2-doc2.68.4-19.el9_8.2ALSA-2026:42089
AlmaLinux:8glib2-fam2.56.4-170.el8_10ALSA-2026:42090
AlmaLinux:10glib2-static2.80.4-12.el10_2.14ALSA-2026:42063
AlmaLinux:8glib2-static2.56.4-170.el8_10ALSA-2026:42090
AlmaLinux:9glib2-static2.68.4-19.el9_8.2ALSA-2026:42089
AlmaLinux:10glib2-tests2.80.4-12.el10_2.14ALSA-2026:42063
AlmaLinux:8glib2-tests2.56.4-170.el8_10ALSA-2026:42090
AlmaLinux:9glib2-tests2.68.4-19.el9_8.2ALSA-2026:42089
AlmaLinux:8mingw32-glib22.70.1-9.el8_10ALSA-2026:49512
AlmaLinux:8mingw32-glib2-static2.70.1-9.el8_10ALSA-2026:49512
AlmaLinux:8mingw64-glib22.70.1-9.el8_10ALSA-2026:49512
AlmaLinux:8mingw64-glib2-static2.70.1-9.el8_10ALSA-2026:49512
Debian:12glib2.0no fix listedDEBIAN-CVE-2026-58016
Debian:13glib2.02.84.4-3~deb13u4DEBIAN-CVE-2026-58016
Debian:14glib2.02.88.3-2DEBIAN-CVE-2026-58016
Rocky Linux:10glib20:2.80.4-12.el10_2.14RLSA-2026:42063
Rocky Linux:8glib20:2.56.4-170.el8_10RLSA-2026:42090
Rocky Linux:9glib20:2.68.4-19.el9_8.2RLSA-2026:42089
Rocky Linux:8mingw-glib20:2.70.1-9.el8_10RLSA-2026:49512
Ubuntu:22.04:LTSglib2.02.72.4-0ubuntu2.10UBUNTU-CVE-2026-58016
Ubuntu:22.04:LTSglib2.02.72.4-0ubuntu2.10USN-8794-1
Ubuntu:24.04:LTSglib2.02.80.0-6ubuntu3.9UBUNTU-CVE-2026-58016
Ubuntu:24.04:LTSglib2.02.80.0-6ubuntu3.9USN-8794-1
Ubuntu:25.10glib2.0no fix listedUBUNTU-CVE-2026-58016
Ubuntu:26.04:LTSglib2.02.88.0-1ubuntu0.1USN-8794-1
Ubuntu:26.04:LTSglib2.02.88.0-1ubuntu0.1UBUNTU-CVE-2026-58016

Affected products (as reported)

VendorProductVersions
GNOME GLib 0 – before 2.89.0
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.20 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.20 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.20 see references

Weakness: CWE-191 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References