---
id: CVE-2023-32643
title: A flaw was found in GLib
summary: >-
  A flaw was found in GLib. The GVariant deserialization code is vulnerable to a
  heap buffer overflow introduced by the fix for CVE-2023-32665. This bug does
  not affect any released version of GLib, but does affect GLib distributors who
  fo…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L'
cwe:
  - CWE-122
  - CWE-787
vendor: gnome
product: glib
affected:
  - glib < 2.75.1
patched:
  - glib 2.75.1
published: '2023-09-14'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T00:16:32.663'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-32643'
references:
  - url: 'https://gitlab.gnome.org/GNOME/glib/-/issues/2840'
    label: secalert@redhat.com
  - url: >-
      https://https://discourse.gnome.org/t/multiple-fixes-for-gvariant-normalisation-issues-in-glib/12835
    label: secalert@redhat.com
  - url: 'https://security.netapp.com/advisory/ntap-20240426-0005/'
    label: secalert@redhat.com
  - url: 'https://gitlab.gnome.org/GNOME/glib/-/issues/2840'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://https://discourse.gnome.org/t/multiple-fixes-for-gvariant-normalisation-issues-in-glib/12835
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.netapp.com/advisory/ntap-20240426-0005/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-398330.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00365
epssPercentile: 0.28637
ingestedAt: '2026-10-15T01:08:04.206Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-05-14T17:30:47.183666Z'
---

## Overview

A flaw was found in GLib. The GVariant deserialization code is vulnerable to a heap buffer overflow introduced by the fix for CVE-2023-32665. This bug does not affect any released version of GLib, but does affect GLib distributors who followed the guidance of GLib developers to backport the initial fix for CVE-2023-32665.

## Affected

- `glib < 2.75.1`

## Remediation

Upgrade past the affected range:

- `glib 2.75.1`