CVE-2023-33952

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

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.

Remediation

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.

Category

6.7
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support
Affected: Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support
Affected: Red Hat Red Hat Enterprise Linux 6
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 9
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2023:6583 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:6901 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:7077 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2024:1404 vendor advisory
https://access.redhat.com/errata/RHSA-2024:4823 vendor advisory
https://access.redhat.com/errata/RHSA-2024:4831 vendor advisory
https://access.redhat.com/security/cve/CVE-2023-33952 third party advisory vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2218212 third party advisory patch issue tracking
https://www.zerodayinitiative.com/advisories/ZDI-CAN-20292 third party advisory patch vdb entry

Frequently Asked Questions

What is the severity of CVE-2023-33952?
CVE-2023-33952 has been scored as a medium severity vulnerability.
How to fix CVE-2023-33952?
As a workaround for remediating CVE-2023-33952: 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.
Is CVE-2023-33952 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-33952 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-33952?
CVE-2023-33952 affects Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support, Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support, Red Hat Red Hat Enterprise Linux 6, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 9.
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