CVE-2023-5633
HIGHCVSS 7.8/10EPSS 0.28%
Last modified
CVE-2023-5633 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.28% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 6.1.13, < 6.1.75 | — |
| Linux | Linux Kernel | >= 6.2, < 6.5.8 | — |
| Linux | Linux Kernel | 6.6 | Rc1 |
| Redhat | Codeready Linux Builder | 8.0 | — |
| Redhat | Codeready Linux Builder | 9.0 | — |
| Redhat | Codeready Linux Builder Eus | 8.8 | — |
| Redhat | Codeready Linux Builder Eus | 9.2 | — |
| Redhat | Codeready Linux Builder Eus | 9.4 | — |
| Redhat | Codeready Linux Builder For Arm64 | 8.0_aarch64 | — |
| Redhat | Codeready Linux Builder For Arm64 | 9.0_aarch64 | — |
| Redhat | Codeready Linux Builder For Arm64 Eus | 8.8_aarch64 | — |
| Redhat | Codeready Linux Builder For Arm64 Eus | 9.2_aarch64 | — |
| Redhat | Codeready Linux Builder For Arm64 Eus | 9.4_aarch64 | — |
| Redhat | Codeready Linux Builder For Ibm Z Systems | 9.0_s390x | — |
| Redhat | Codeready Linux Builder For Ibm Z Systems Eus | 9.2_s390x | — |
| Redhat | Codeready Linux Builder For Ibm Z Systems Eus | 9.4_s390x | — |
| Redhat | Codeready Linux Builder For Power Little Endian | 8.0_ppc64le | — |
| Redhat | Codeready Linux Builder For Power Little Endian | 9.0_ppc64le | — |
| Redhat | Codeready Linux Builder For Power Little Endian Eus | 8.8_ppc64le | — |
| Redhat | Codeready Linux Builder For Power Little Endian Eus | 9.2_ppc64le | — |
| Redhat | Codeready Linux Builder For Power Little Endian Eus | 9.4_ppc64le | — |
| Redhat | Enterprise Linux | 8.0 | — |
| Redhat | Enterprise Linux | 9.0 | — |
| Redhat | Enterprise Linux Eus | 8.8 | — |
| Redhat | Enterprise Linux Eus | 9.2 | — |
| Redhat | Enterprise Linux Eus | 9.4 | — |
| Redhat | Enterprise Linux For Arm 64 | 8.0_aarch64 | — |
| Redhat | Enterprise Linux For Arm 64 | 9.0_aarch64 | — |
| Redhat | Enterprise Linux For Arm 64 Eus | 8.8_aarch64 | — |
| Redhat | Enterprise Linux For Arm 64 Eus | 9.2_aarch64 | — |
| Redhat | Enterprise Linux For Arm 64 Eus | 9.4_aarch64 | — |
| Redhat | Enterprise Linux For Ibm Z Systems | 8.0_s390x | — |
| Redhat | Enterprise Linux For Ibm Z Systems | 9.0_s390x | — |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | 8.8_s390x | — |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | 9.2_s390x | — |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | 9.4_s390x | — |
| Redhat | Enterprise Linux For Power Little Endian | 8.0_ppc64le | — |
| Redhat | Enterprise Linux For Power Little Endian | 9.0_ppc64le | — |
| Redhat | Enterprise Linux For Power Little Endian Eus | 9.2_ppc64le | — |
| Redhat | Enterprise Linux For Power Little Endian Eus | 9.4_ppc64le | — |
| Redhat | Enterprise Linux For Real Time | 8.0 | — |
| Redhat | Enterprise Linux For Real Time | 9.0 | — |
| Redhat | Enterprise Linux For Real Time For Nfv | 8.0 | — |
| Redhat | Enterprise Linux For Real Time For Nfv | 9.0 | — |
| Redhat | Enterprise Linux Server Aus | 9.2 | — |
| Redhat | Enterprise Linux Server Aus | 9.4 | — |
| Redhat | Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions | 8.8 | — |
| Redhat | Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions | 9.2_ppc64le | — |
| Redhat | Enterprise Linux Server Tus | 8.8 | — |
References
- https://access.redhat.com/errata/RHSA-2024:0113Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0134Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0461Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:1404Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:4823Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:4831Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-5633Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2245663Issue Tracking, Patch
- https://access.redhat.com/errata/RHSA-2024:0113Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0134Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0461Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:1404Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:4823Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:4831Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-5633Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2245663Issue Tracking, Patch
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-5633?
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.
How severe is CVE-2023-5633?
CVE-2023-5633 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.
How do I fix CVE-2023-5633?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2023-5633?
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