CVE-2023-33952

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

MEDIUM
6.7
CVSS Score
Published: July 24, 2023 at 03:19 PM UTC
Updated: June 17, 2026 at 06:02 AM UTC
4 products affected across 2 vendorsLinux KernelEnterprise LinuxEnterprise Linux for Real Time

Using Red Hat Enterprise Linux 8 by Red Hat?

Get instant alerts when new vulnerabilities affect Red Hat Enterprise Linux 8 - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.7
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 6.3.9
Vendor states this is fixed in 0:4.18.0-477.51.1.el8_8 (unaffected)
Vendor states this is fixed in 0:4.18.0-513.5.1.el8_9 (unaffected)
Vendor states this is fixed in 0:4.18.0-513.5.1.rt7.307.el8_9 (unaffected)
Vendor states this is fixed in 0:5.14.0-284.75.1.el9_2 (unaffected)
Vendor states this is fixed in 0:5.14.0-284.75.1.rt14.360.el9_2 (unaffected)
Vendor states this is fixed in 0:5.14.0-362.8.1.el9_3 (unaffected)
Vendor states this is fixed in 6 (unaffected)
Vendor states this is fixed in 7 (unaffected)

References (9)

Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2023:6583
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2023:6901
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2023:7077
VDB Entryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/security/cve/CVE-2023-33952
Issue Trackingx_refsource_REDHATPatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2218212

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.7MEDIUMredhat
Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-415

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card