CVE-2023-5633 Kernel: vmwgfx: reference count issue leads to use-after-free in surface handling

2023-10-2321:58:59

CWE-416

redhat

github.com

cve-2023-5633 kernel use-after-free vmware escalation privilege.

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

6.7

Confidence

High

EPSS

Percentile

15.9%

SSVC

Exploitation

None

Automatable

Technical Impact

Total

JSON

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.