CVE-2022-22942

Local privilege escalation via stale file descriptor

Published Dec 13, 2023 · Updated Aug 3, 2024

Use-after-free in the vmwgfx driver in VMware Photon OS 3.0 and 4.0 allows local users to access files opened by other processes. A failed fence usercopy leaves an installed file-table entry referring to a freed file object because fd_install runs before the copy succeeds. Exploitation requires a loaded vmwgfx driver, access to /dev/dri/card0 or /dev/dri/rendererD128, and permission to issue ioctls, enabling file access and privilege escalation.

CVSS severity7.8
High
EPSS probability2.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use-after-free in the vmwgfx driver in VMware Photon OS 3.0 and 4.0 allows local users to access files opened by other processes. A failed fence usercopy leaves an installed file-table entry referring to a freed file object because fd_install runs before the copy succeeds. Exploitation requires a loaded vmwgfx driver, access to /dev/dri/card0 or /dev/dri/rendererD128, and permission to issue ioctls, enabling file access and privilege escalation.

The record

CVE
CVE-2022-22942
Published
Dec 13, 2023
Updated
Aug 3, 2024
Vendor
VMware
Product
Photon OS
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0, 4.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

VMware · Photon OSversion=3.0, 4.0

Published CVSS scores

7.8VMwareCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo