CVE-2023-5633
Kernel: vmwgfx: reference count issue leads to use-after-free in surface handling
- Published
- Updated
- Reserved
- Assigned by
- redhat
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.28% · top 80% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
Red Hat · Red Hat Enterprise Linux 8
- unaffected 0:4.18.0-513.11.1.rt7.313.el8_9 – < *
Red Hat · Red Hat Enterprise Linux 8
- unaffected 0:4.18.0-513.11.1.el8_9 – < *
Red Hat · Red Hat Enterprise Linux 8.8 Extended Update Support
- unaffected 0:4.18.0-477.51.1.el8_8 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:5.14.0-362.18.1.el9_3 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:5.14.0-362.18.1.el9_3 – < *
Red Hat · Red Hat Enterprise Linux 9.2 Extended Update Support
- unaffected 0:5.14.0-284.75.1.el9_2 – < *
Red Hat · Red Hat Enterprise Linux 9.2 Extended Update Support
- unaffected 0:5.14.0-284.75.1.rt14.360.el9_2 – < *
Red Hat · Red Hat Enterprise Linux 6
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 7
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 7
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 9
All versions: affected
What to do
Workaround: This flaw can be mitigated by turning off 3D acceleration in VMware (if possible) or preventing the affected `vmwgfx` kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278.
References (8)
- RHSA-2024:0113 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0134 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0461 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:1404 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:4823 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:4831 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://access.redhat.com/security/cve/CVE-2023-5633 (opens in a new tab)vdb-entryx_refsource_REDHATx_transferred
- RHBZ#2245663 (opens in a new tab)issue-trackingx_refsource_REDHATx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-5633)Record last updated .