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

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Summary

CVECVE-2023-33952
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-07-24 16:15:11 UTC
Updated2026-11-06 21:17:00 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 6.7 MEDIUM from [email protected]

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

EPSS: 0.004650000 probability, percentile 0.405300000 (date 2026-11-08)

Problem Types: CWE-415 | CWE-415 Double Free

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.7MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary6.7MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS6.7MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All
Operating System Redhat Enterprise Linux 8.0 All All All
Operating System Redhat Enterprise Linux 9.0 All All All
Operating System Redhat Enterprise Linux For Real Time 8.0 All All All
Operating System Redhat Enterprise Linux For Real Time For Nfv 8.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:4.18.0-513.5.1.rt7.307.el8_9 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:4.18.0-513.5.1.el8_9 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support unaffected 0:4.18.0-477.51.1.el8_8 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:5.14.0-362.8.1.el9_3 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:5.14.0-362.8.1.el9_3 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support unaffected 0:5.14.0-284.75.1.el9_2 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support unaffected 0:5.14.0-284.75.1.rt14.360.el9_2 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 6 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 9 Not specified Not specified

References

ReferenceSourceLinkTags
access.redhat.com/errata/RHSA-2024:4823 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
access.redhat.com/errata/RHSA-2024:1404 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
ZDI-23-708 | Zero Day Initiative af854a3a-2127-422b-91ae-364da2661108 www.zerodayinitiative.com Patch, Third Party Advisory, VDB Entry
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
cve-details af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
access.redhat.com/errata/RHSA-2024:4831 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
2218212 – (CVE-2023-33952, ZDI-23-708, ZDI-CAN-20292) CVE-2023-33952 kernel: vmwgfx: double free within the handling of vmw_buffer_object objects af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2023-06-28T00:00:00.000ZReported to Red Hat.
CNA2023-02-15T00:00:00.000ZMade public.

Workarounds

CNA: 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.

Legacy QID Mappings

  • 161066 Oracle Enterprise Linux Security Update for kernel (ELSA-2023-6583)
  • 161147 Oracle Enterprise Linux Security Update for kernel (ELSA-2023-7077)
  • 242399 Red Hat Update for kernel security (RHSA-2023:6583)
  • 242434 Red Hat Update for kernel-rt security (RHSA-2023:6901)
  • 242451 Red Hat Update for kernel security (RHSA-2023:7077)
  • 243087 Red Hat Update for kernel (RHSA-2024:1404)
  • 755851 SUSE Enterprise Linux Security Update for the linux kernel (SUSE-SU-2023:2646-1)
  • 907520 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (27756-1)
  • 941453 AlmaLinux Security Update for kernel (ALSA-2023:7077)

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