CVE-2023-33952

Kernel: vmwgfx: double free within the handling of vmw_buffer_object objects

publishedCWE-415

A double-free vulnerability was found in handling vmw_buffer_object objects in the vmwgfx driver in the Linux kernel. This issue occurs due to the lack of validating the existence of an object prior to performing further free operations on the object, which may allow a local privileged user to escalate privileges and execute code in the context of the kernel.

Technical severity6.7 mediumCVSS 3.1 · CNA: redhat

Published2023-07-24Source updated 2026-11-06

Collected2026-11-062 attributed sources

Fixes and workarounds

Workaround

This flaw can be mitigated by 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.

Source: CNA: redhat

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
Red Hat Enterprise Linux 8 Red Hat `kernel-rt` https://access.redhat.com/downloads/content/package-browser/	≥ 0:4.18.0-513.5.1.rt7.307.el8_9; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 8 Red Hat `kernel` https://access.redhat.com/downloads/content/package-browser/	≥ 0:4.18.0-513.5.1.el8_9; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 8.8 Extended Update Support Red Hat `kernel` https://access.redhat.com/downloads/content/package-browser/	≥ 0:4.18.0-477.51.1.el8_8; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 9 Red Hat `kernel` https://access.redhat.com/downloads/content/package-browser/	≥ 0:5.14.0-362.8.1.el9_3; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat `kernel` https://access.redhat.com/downloads/content/package-browser/	≥ 0:5.14.0-284.75.1.el9_2; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat `kernel-rt` https://access.redhat.com/downloads/content/package-browser/	≥ 0:5.14.0-284.75.1.rt14.360.el9_2; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 6 Red Hat `kernel` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: unaffected	CNA: redhat
Red Hat Enterprise Linux 7 Red Hat `kernel` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: unaffected	CNA: redhat
Red Hat Enterprise Linux 7 Red Hat `kernel-rt` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: unaffected	CNA: redhat
Red Hat Enterprise Linux 9 Red Hat `kernel-rt` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
3.1 / 6.7 medium	`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`	CNA: redhat

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

https://access.redhat.com/errata/RHSA-2023:6583CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:6901CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:7077CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1404CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4823CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4831CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2023-33952CNA: redhat · vdb-entry, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2218212CNA: redhat · issue-tracking, x_refsource_REDHAT
https://www.zerodayinitiative.com/advisories/ZDI-CAN-20292CNA: redhat
https://access.redhat.com/errata/RHSA-2023:6583ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
https://access.redhat.com/errata/RHSA-2023:6901ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
https://access.redhat.com/errata/RHSA-2023:7077ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
https://access.redhat.com/errata/RHSA-2024:1404ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
https://access.redhat.com/errata/RHSA-2024:4823ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
https://access.redhat.com/errata/RHSA-2024:4831ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
https://access.redhat.com/security/cve/CVE-2023-33952ADP: CVE · vdb-entry, x_refsource_REDHAT, x_transferred
https://bugzilla.redhat.com/show_bug.cgi?id=2218212ADP: CVE · issue-tracking, x_refsource_REDHAT, x_transferred
https://www.zerodayinitiative.com/advisories/ZDI-CAN-20292ADP: CVE · x_transferred

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