CVE-2023-32643

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-09-14 · updated 2026-10-15
Weakness: CWE-122

Description

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 products

GNOME GLib: before 2.75.1 — fixed in 2.75.1

How to fix

Upgrade to a fixed version: GNOME GLib 2.75.1. Check the vendor advisory for mitigations.

References

https://gitlab.gnome.org/GNOME/glib/-/issues/2840
https://https://discourse.gnome.org/t/multiple-fixes-for-gvariant-normalisation-issues-in-glib/12835
https://security.netapp.com/advisory/ntap-20240426-0005/
https://gitlab.gnome.org/GNOME/glib/-/issues/2840
https://https://discourse.gnome.org/t/multiple-fixes-for-gvariant-normalisation-issues-in-glib/12835
https://security.netapp.com/advisory/ntap-20240426-0005/
https://cert-portal.siemens.com/productcert/html/ssa-398330.html

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