GNOME GLib up to 2.88.0 gio/gdbusintrospection.c g_dbus_node_info_new_for_xml integer underflow

Summaryinfo

A vulnerability has been found in GNOME GLib up to 2.88.0 and classified as problematic. The affected element is the function g_dbus_node_info_new_for_xml of the file gio/gdbusintrospection.c. Performing a manipulation results in integer underflow. This vulnerability was named CVE-2026-58016. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, was found in GNOME GLib up to 2.88.0. This affects the function g_dbus_node_info_new_for_xml of the file gio/gdbusintrospection.c. The manipulation with an unknown input leads to a integer underflow vulnerability. CWE is classifying the issue as CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. This is going to have an impact on availability. The summary by CVE is:

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.

The advisory is shared at access.redhat.com. This vulnerability is uniquely identified as CVE-2026-58016 since 06/26/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 324013 (Linux Distros Unpatched Vulnerability : CVE-2026-58016), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.88.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (324013), EUVD (EUVD-2026-40319) and CERT Bund (WID-SEC-2026-2419). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

• Amazon Linux 2
• SUSE Linux
• Oracle Linux
• Red Hat Enterprise Linux

Productinfo

Vendor

• GNOME

Name

• GLib

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.30
• 2.31
• 2.32
• 2.33
• 2.34
• 2.35
• 2.36
• 2.37
• 2.38
• 2.39
• 2.40
• 2.41
• 2.42
• 2.43
• 2.44
• 2.45
• 2.46
• 2.47
• 2.48
• 2.49
• 2.50
• 2.51
• 2.52
• 2.53
• 2.54
• 2.55
• 2.56
• 2.57
• 2.58
• 2.59
• 2.60
• 2.61
• 2.62
• 2.63
• 2.64
• 2.65
• 2.66
• 2.67
• 2.68
• 2.69
• 2.70
• 2.71
• 2.72
• 2.73
• 2.74
• 2.75
• 2.76
• 2.77
• 2.78
• 2.79
• 2.80
• 2.81
• 2.82
• 2.83
• 2.84
• 2.85
• 2.86
• 2.87
• 2.88.0

License

• open-source

Website

• Vendor: https://www.gnome.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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