# CVE-2023-39198

## Summary

- **CVE ID:** CVE-2023-39198
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H)
- **CWE:** CWE-366, CWE-416
- **Published:** Nov 9, 2023
- **Last Modified:** Mar 24, 2026

## Description

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

- Red Hat — Red Hat Enterprise Linux 8 (0:4.18.0-553.rt7.342.el8_10)
- Red Hat — Red Hat Enterprise Linux 8 (0:4.18.0-553.el8_10)
- Red Hat — Red Hat Enterprise Linux 9 (0:5.14.0-427.13.1.el9_4)

## References

- [CNA](https://access.redhat.com/errata/RHSA-2024:2394)
- [CNA](https://access.redhat.com/errata/RHSA-2024:2950)
- [CNA](https://access.redhat.com/errata/RHSA-2024:3138)
- [CNA](https://access.redhat.com/security/cve/CVE-2023-39198)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2218332)
- [CVE](https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.01%
- **EPSS Percentile:** 0.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._