CVE-2023-32611 G_variant_byteswap() can take a long time with some non-normal inputs
A crafted GVariant input causes excessive processing in GLib, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-32611?
CVE-2023-32611 is a medium-severity denial of service vulnerability in Fedora Extra Packages for Enterprise Linux, published on 14 Sep 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-400
Which versions are affected by CVE-2023-32611?
It affects 1 product.
Products include Gnome Glib.
How do I fix CVE-2023-32611?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-32611 being exploited?
There is no known exploitation of CVE-2023-32611 in the wild and no public exploit code.
Other vulnerabilities in Fedora Extra Packages for Enterprise Linux
- CVE-2020-35457 Integer overflow in n/a
- CVE-2009-3289 Privilege escalation in n/a
- CVE-2025-13601 Glib: integer overflow in in g_escape_uri_string()
- CVE-2026-58016 Glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"
- CVE-2025-4056 Glib: glib crash after long command line
Sources
Also known as AZL-28774, DEBIAN-CVE-2023-32611, GHSA-qjp4-g2mq-4r5w, JLSEC-2025-161, UBUNTU-CVE-2023-32611.