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

CVSS 7.5 · High EPSS 0.43% · P36

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProductVersion RangeStatus
GNOMEGLib< 2.89.0affected
Red HatRed Hat Discovery 21784821670< *unaffected
1784821750< *unaffected
Red HatRed Hat Enterprise Linux 100:2.80.4-12.el10_2.14< *unaffected
anyaffected
Red HatRed Hat Enterprise Linux 6anyaffected
Red HatRed Hat Enterprise Linux 7anyaffected
Red HatRed Hat Enterprise Linux 80:2.56.4-170.el8_10< *unaffected
anyaffected
Red HatRed Hat Enterprise Linux 90:2.68.4-19.el9_8.2< *unaffected
0:2.68.4-19.el9_8.2< *unaffected
anyaffected
Red HatRed Hat Hardened Imagesanyunaffected
Red HatRed Hat Update Infrastructure 51784794818< *unaffected
1784794778< *unaffected
1784795112< *unaffected
1784794289< *unaffected
1784795076< *unaffected
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I. Basic Information for CVE-2026-58016

Vulnerability Information
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Vulnerability Title
Glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数下溢(超界折返)
Source: CVE Program / CVE List V5
Vulnerability Title
GNOME GLib 数字错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNOME glib是GNOME基金会开源的一个通用的、可移植的实用程序库。提供了许多有用的数据类型、宏、类型转换、字符串实用程序、文件实用程序、主循环抽象等。 GLib 2.88.1之前版本存在数字错误漏洞，该漏洞源于在g_dbus_node_info_new_for_xml()函数处理格式错误的D-Bus introspection XML时存在状态混淆问题，具体为<node>元素嵌套在<method>、<signal>、<property>或<arg>等其他元素内，可能导致无符号整数溢出并引发越界读
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
GNOMEGLib 0 ~ 2.89.0 -
Red HatRed Hat Enterprise Linux 10 0:2.80.4-12.el10_2.14 ~ * cpe:/o:redhat:enterprise_linux:10.2
Red HatRed Hat Enterprise Linux 8 0:2.56.4-170.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::crb
Red HatRed Hat Enterprise Linux 9 0:2.68.4-19.el9_8.2 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red HatRed Hat Enterprise Linux 9 0:2.68.4-19.el9_8.2 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red HatRed Hat Discovery 2 1784821670 ~ * cpe:/a:redhat:discovery:2::el9
Red HatRed Hat Discovery 2 1784821750 ~ * cpe:/a:redhat:discovery:2::el9
Red HatRed Hat Update Infrastructure 5 1784794818 ~ * cpe:/a:redhat:rhui:5::el9
Red HatRed Hat Update Infrastructure 5 1784794778 ~ * cpe:/a:redhat:rhui:5::el9
Red HatRed Hat Update Infrastructure 5 1784795112 ~ * cpe:/a:redhat:rhui:5::el9
Red HatRed Hat Update Infrastructure 5 1784794289 ~ * cpe:/a:redhat:rhui:5::el9
Red HatRed Hat Update Infrastructure 5 1784795076 ~ * cpe:/a:redhat:rhui:5::el9
Red HatRed Hat Enterprise Linux 10-cpe:/o:redhat:enterprise_linux:10
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 8-cpe:/o:redhat:enterprise_linux:8
Red HatRed Hat Enterprise Linux 9-cpe:/o:redhat:enterprise_linux:9
Red HatRed Hat Hardened Images-cpe:/a:redhat:hummingbird:1

II. Public POCs for CVE-2026-58016

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III. Intelligence Information for CVE-2026-58016

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Vendor Advisories for CVE-2026-58016 (7)

Other References for CVE-2026-58016 (1)

Same Patch Batch · GNOME · 2026-06-30 · 7 CVEs total

CVE-2026-580147.3 HIGHGlib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list"
CVE-2026-580116.5 MEDIUMGlib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid gdatetime
CVE-2026-580136.5 MEDIUMGlib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend"
CVE-2026-580126.5 MEDIUMGlib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_n
CVE-2026-580106.5 MEDIUMGlib: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal()
CVE-2026-580155.9 MEDIUMGlib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mec

IV. Related Vulnerabilities

Same product: GLib
Same vendor: GNOME
Same weakness: CWE-191

V. Comments for CVE-2026-58016

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