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Vulnerability record · CVE-2023-5633 · published 23 October 2023

CVE-2023-5633: Linux kernel use after free vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.28% · top 81.7% CWE-911 · CWE-911CWE-416 · Use after free
7.8CVSS 3.1 base score
0.28%EPSS exploitation probability, 30 days
NoNot in CISA KEV
22Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

22 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2024:0113 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0134 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0461 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:1404 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:4823 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:4831 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-5633 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2245663 Issue TrackingPatch
https://access.redhat.com/errata/RHSA-2024:0113 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0134 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0461 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:1404 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:4823 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:4831 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-5633 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2245663 Issue TrackingPatch

Track CVE-2023-5633 inside VULONE

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Source: NIST National Vulnerability Database (record CVE-2023-5633), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.