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Rocky Linux 9.6 [TuxCare] Security Update: dbus-broker (ALMALINUX9.6:CLSA-2026:1791316945)

medium Nessus Plugin ID 363438

Synopsis

The Rocky Linux host is missing one or more security updates.

Description

The Rocky Linux 9.6 host has a package installed that is affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1791316945 advisory.

 - 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.
 (CVE-2026-16730)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected dbus-broker package based on the guidance in TuxCare advisory ALMALINUX9.6:CLSA-2026:1791316945.

See Also

https://cve.tuxcare.com/els/releases/CLSA-2026:1791316945

http://www.nessus.org/u?c845ff06

Plugin Details

Severity: Medium

ID: 363438

File Name: tuxcare_rocky_linux_9.6_CLSA-2026-1791316945.nasl

Version: 1.1

Type: Local

Published: 10/6/2026

Updated: 10/6/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.62

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2026-16730

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list, Host/OS/extended-third-party

Exploit Ease: No known exploits are available

Patch Publication Date: 10/6/2026

Vulnerability Publication Date: 7/24/2026

Reference Information

CVE: CVE-2026-16730

CLSA: 2026:1791316945