SB2026100232 - Integer overflow in GNOME GLib

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Main Vulnerability Database SB2026100232

SB2026100232 - Integer overflow in GNOME GLib

Published: October 2, 2026

Security Bulletin ID SB2026100232
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Integer underflow (CVE-ID: CVE-2026-58016)

CWE-ID: CWE-191 - Integer underflow

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to 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`. A remote attacker can send a specially crafted request to the affected application, trigger an unsigned integer overflow and lead to an out-of-bounds read, resulting in a denial of service.


Remediation

Install update from vendor's website.

References