Improper Handling of Exceptional Conditions Affecting dbus-broker package, versions <0:36-5.el10_2


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.15% (5th percentile)

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  • Snyk IDSNYK-RHEL10-DBUSBROKER-19450173
  • published1 Sept 2026
  • disclosed23 Jul 2026

Introduced: 23 Jul 2026

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

How to fix?

Upgrade RHEL:10 dbus-broker to version 0:36-5.el10_2 or higher.
This issue was patched in RHSA-2026:61340.

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:10 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