Improper Handling of Exceptional Conditions Affecting dbus-broker package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.11% (2nd percentile)

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  • Snyk IDSNYK-RHEL9-DBUSBROKER-18354843
  • published28 Jul 2026
  • disclosed23 Jul 2026

Introduced: 23 Jul 2026

NewCVE-2026-16730  (opens in a new tab)
CWE-755  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:9 dbus-broker.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dbus-broker package and not the dbus-broker package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

A flaw was found in dbus-broker. When the process file-descriptor limit is reached, EMFILE/ENFILE errors during peer setup (notably SO_PEERPIDFD) are handled as fatal failures, causing the broker to exit. A local attacker who can open many connections to the user session bus can trigger this and deny service to the desktop session. Flatpak applications can reach the host session bus through the dbus proxy.

CVSS Base Scores

version 3.1