CVE-2023-5633
Kernel: vmwgfx: reference count issue leads to use-after-free in surface handling
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-911 |
| Vendor | red hat |
| Product | red hat enterprise linux 8 |
| Published | Oct 23, 2023 |
| Last Updated | Feb 25, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0113 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0134 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0461 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:1404 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:4823 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:4831 access.redhat.com: https://access.redhat.com/security/cve/CVE-2023-5633 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2245663
Credits
Red Hat would like to thank Murray McAllister (NCC Group APAC) for reporting this issue.