CVE-2022-42011

Authenticated service crash via malformed array length

Published Oct 9, 2022 · Updated Jun 9, 2025

Denial of service in affected D-Bus releases allows local users to crash dbus-daemon and other libdbus programs with a malformed message. The libdbus message validator accepts a fixed-length array whose byte length is not a multiple of its element size, causing an assertion failure in debug builds or an out-of-bounds read in production builds. Access to the system bus or a custom DBusServer is required in typical configurations; uncommon remotely exposed configurations extend the same crash path to remote authenticated users.

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

Denial of service in affected D-Bus releases allows local users to crash dbus-daemon and other libdbus programs with a malformed message. The libdbus message validator accepts a fixed-length array whose byte length is not a multiple of its element size, causing an assertion failure in debug builds or an out-of-bounds read in production builds. Access to the system bus or a custom DBusServer is required in typical configurations; uncommon remotely exposed configurations extend the same crash path to remote authenticated users.

The record

CVE
CVE-2022-42011
Published
Oct 9, 2022
Updated
Jun 9, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-129, T1499.004
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

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5NIST NVDCVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-129Improper Validation of Array Index
T1499.004Application or System Exploitation

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

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Your stack

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