CVE-2022-42012Public exploit

Service crash via Unix FD byteswap use-after-free

Published Oct 9, 2022 · Updated Jun 9, 2025

Use-after-free in D-Bus before 1.12.24, 1.13.0 through 1.14.3, and 1.15.0 through 1.15.1 allows local users to crash services. The byteswap routine ignores DBUS_TYPE_UNIX_FD without advancing its data pointer, desynchronizing the type and content cursors and causing a use-after-free. An authenticated local sender must submit an opposite-endian message with out-of-band Unix file descriptors; uncommon custom DBusServer configurations can expose the same crash remotely.

CVSS severity6.5
Medium
EPSS probability1.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in D-Bus before 1.12.24, 1.13.0 through 1.14.3, and 1.15.0 through 1.15.1 allows local users to crash services. The byteswap routine ignores DBUS_TYPE_UNIX_FD without advancing its data pointer, desynchronizing the type and content cursors and causing a use-after-free. An authenticated local sender must submit an opposite-endian message with out-of-band Unix file descriptors; uncommon custom DBusServer configurations can expose the same crash remotely.

The record

CVE
CVE-2022-42012
Published
Oct 9, 2022
Updated
Jun 9, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, T1489
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1489Service Stop

Public exploit references

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

Technologies

Your stack

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Your stack

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