5.5

CVE-2026-16730

Dbus-broker: dbus-broker: session bus denial of service via emfile during peer setup

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerRed Hat
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Produkt Red Hat Enterprise Linux 10
Default Statusaffected
Version 0:36-5.el10_2
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat Enterprise Linux 9
Default Statusaffected
Version 0:28-9.el9_8
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat Update Infrastructure 5
Default Statusaffected
Version 1788880445
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat Update Infrastructure 5
Default Statusaffected
Version 1788880464
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat Update Infrastructure 5
Default Statusaffected
Version 1788880456
Version < *
Status unaffected
HerstellerRed Hat
≫
Produkt Red Hat Update Infrastructure 5
Default Statusaffected
Version 1788765051
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat Update Infrastructure 5
Default Statusaffected
Version 1788880581
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat Hardened Images
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4
Default Statusaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.11% 0.013
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
RedHat 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-755 Improper Handling of Exceptional Conditions

The product does not handle or incorrectly handles an exceptional condition.

https://access.redhat.com/security/cve/CVE-2026-16730
https://bugzilla.redhat.com/show_bug.cgi?id=2506348
https://github.com/bus1/dbus-broker/issues/435
https://access.redhat.com/errata/RHSA-2026:61340
https://access.redhat.com/errata/RHSA-2026:61355
https://access.redhat.com/errata/RHSA-2026:66018