CVE-2023-39198: Fedoraproject Fedora

Medium severity, CVSS 6.4. EPSS: 0.4% chance of exploitation in the next 30 days.

A race condition was found in the QXL driver in the Linux kernel. The qxl_mode_dumb_create() function dereferences the qobj returned by the qxl_gem_object_create_with_handle(), but the handle is the only one holding a reference to it. This flaw allows an attacker to guess the returned handle value and trigger a use-after-free issue, potentially leading to a denial of service or privilege escalation.

Affected products

• Fedoraproject Fedora: version 38 only
• Linux Linux Kernel: before 6.5 (fixed in 6.5); version 6.5 only
• Red Hat Enterprise Linux: version 8.0 only; version 9.0 only

Published 2023-11-09. Last modified 2026-06-17.