---
id: CVE-2023-32636
title: >-
  A flaw was found in glib, where the gvariant deserialization code is
  vulnerable to a denial of service introduced by additional input validation
  added to resolve CVE-2023-29499
summary: >-
  A flaw was found in glib, where the gvariant deserialization code is
  vulnerable to a denial of service introduced by additional input validation
  added to resolve CVE-2023-29499. The offset table validation may be very slow.
  This bug does…
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
  - CWE-502
vendor: gnome
product: glib
affected:
  - glib < 2.74.4
patched:
  - glib 2.74.4
published: '2023-09-14'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T00:16:32.510'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-32636'
references:
  - url: 'https://gitlab.gnome.org/GNOME/glib/-/issues/2841'
    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-20231110-0002/'
    label: secalert@redhat.com
  - url: 'https://gitlab.gnome.org/GNOME/glib/-/issues/2841'
    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-20231110-0002/'
    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: 0.00774
epssPercentile: 0.54733
ingestedAt: '2026-10-15T01:08:04.206Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-10-11T17:51:57.659191Z'
---

## Overview

A flaw was found in glib, where the gvariant deserialization code is vulnerable to a denial of service introduced by additional input validation added to resolve CVE-2023-29499. The offset table validation may be very slow. 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-2023-29499.

## Affected

- `glib < 2.74.4`

## Remediation

Upgrade past the affected range:

- `glib 2.74.4`