CVE-2023-32611: G_variant_byteswap() can take a long time with some non-normal inputs

Severity: medium (CVSS 5.5 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-400

Description

A flaw was found in GLib. GVariant deserialization is vulnerable to a slowdown issue where a crafted GVariant can cause excessive processing, leading to denial of service.

Affected products

GNOME GLib: before 2.74.2 — fixed in 2.74.2

How to fix

Upgrade to a fixed version: GNOME GLib 2.74.2. Check the vendor advisory for mitigations.

References

https://access.redhat.com/security/cve/CVE-2023-32611
https://bugzilla.redhat.com/show_bug.cgi?id=2211829
https://gitlab.gnome.org/GNOME/glib/-/issues/2797
https://lists.debian.org/debian-lts-announce/2023/09/msg00030.html
https://security.gentoo.org/glsa/202311-18
https://security.netapp.com/advisory/ntap-20231027-0005/
https://access.redhat.com/security/cve/CVE-2023-32611
https://bugzilla.redhat.com/show_bug.cgi?id=2211829
https://gitlab.gnome.org/GNOME/glib/-/issues/2797
https://lists.debian.org/debian-lts-announce/2023/09/msg00030.html
https://security.gentoo.org/glsa/202311-18
https://security.netapp.com/advisory/ntap-20231027-0005/

Get alerted when CVE-2023-32611 or the next vulnerability affects your stack