# CVE-2023-5633

## Summary

- **CVE ID:** CVE-2023-5633
- **Severity:** HIGH
- **CVSS Score:** 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** CWE-416, CWE-911
- **Published:** Oct 23, 2023
- **Last Modified:** Mar 13, 2026

## Description

The reference count changes made as part of the CVE-2023-33951 and CVE-2023-33952 fixes exposed a use-after-free flaw in the way memory objects were handled when they were being used to store a surface. When running inside a VMware guest with 3D acceleration enabled, a local, unprivileged user could potentially use this flaw to escalate their privileges.

## Affected Products

- Red Hat — Red Hat Enterprise Linux 8 (0:4.18.0-513.11.1.rt7.313.el8_9)
- Red Hat — Red Hat Enterprise Linux 8 (0:4.18.0-513.11.1.el8_9)
- Red Hat — Red Hat Enterprise Linux 8.8 Extended Update Support (0:4.18.0-477.51.1.el8_8)
- Red Hat — Red Hat Enterprise Linux 9 (0:5.14.0-362.18.1.el9_3)
- Red Hat — Red Hat Enterprise Linux 9.2 Extended Update Support (0:5.14.0-284.75.1.el9_2)
- Red Hat — Red Hat Enterprise Linux 9.2 Extended Update Support (0:5.14.0-284.75.1.rt14.360.el9_2)

## References

- [CNA](https://access.redhat.com/errata/RHSA-2024:0113)
- [CNA](https://access.redhat.com/errata/RHSA-2024:0134)
- [CNA](https://access.redhat.com/errata/RHSA-2024:0461)
- [CNA](https://access.redhat.com/errata/RHSA-2024:1404)
- [CNA](https://access.redhat.com/errata/RHSA-2024:4823)
- [CNA](https://access.redhat.com/errata/RHSA-2024:4831)
- [CNA](https://access.redhat.com/security/cve/CVE-2023-5633)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2245663)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.01%
- **EPSS Percentile:** 2.8

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