CVE-2026-44931: Allocation of Resources Without Limits or Throttling

The newly introduced RecordUsage D-Bus method https://gitlab.freedesktop.org/pwithnall/malcontent/-/blob/0.14.0/libmalcontent-timer/child-timer-service.c in malcontent-timerd allows arbitrary users in the system to slowly fill up disk space in /var/lib/malcontent-timerd...

CVE-2026-25710: Execution with Unnecessary Privileges

The new upstream added a privileged D-Bus helper called plasmaloginauthhelper, which suffers from multiple issues, e.g.aA compromised plasmalogin service account can chown arbitrary files in the system...

Firewalld: firewalld: local unprivileged user can modify firewall state due to d-bus setter mis-authorization

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avahi: avahi-daemon: Avahi: Denial of Service via D-Bus method call

A flaw was found in Avahi. An unprivileged local user can exploit this vulnerability by sending a D-Bus method call with conflicting publish flags. This can lead to a denial of service DoS by crashing the avahi-daemon, making the service unavailable...

OESA-2026-1854 avahi security update

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. This enables you to plug your laptop or computer into a network and instantly be able to view other people who you can chat with, find printers to print to or find files being shared...

CVE-2026-39959

Tmds.DBus provides .NET libraries for working with D-Bus from .NET. Tmds.DBus and Tmds.DBus.Protocol are vulnerable to malicious D-Bus peers. A peer on the same bus can spoof signals by impersonating the owner of a well-known name, exhaust system resources or cause file descriptor spillover by...

EUVD-2026-20964

Tmds.DBus provides .NET libraries for working with D-Bus from .NET. Tmds.DBus and Tmds.DBus.Protocol are vulnerable to malicious D-Bus peers. A peer on the same bus can spoof signals by impersonating the owner of a well-known name, exhaust system resources or cause file descriptor spillover by...

D-Bus 安全漏洞

D-Bus is an open-source implementation of the D-Bus specification. Security vulnerabilities exist in versions of D-Bus prior to 0.92.0, as well as in versions of Tmds.DBus.Protocol 0.92.0 and 0.21.3. These vulnerabilities stem from exposure to attacks by malicious D-Bus peers, which can lead to...

PT-2026-31658

Tmds.DBus and Tmds.DBus.Protocol are vulnerable to malicious D-Bus peers. A peer on the same bus can spoof signals by impersonating the owner of a well-known name, exhaust system resources or cause file descriptor spillover by sending messages with an excessive number of Unix file descriptors, an...

DEBIAN-CVE-2026-34080

xdg-dbus-proxy is a filtering proxy for D-Bus connections. Prior to 0.1.7, a policy parser vulnerability allows bypassing eavesdrop restrictions. The proxy checks for eavesdrop=true in policy rules but fails to handle eavesdrop ='true' with a space before the equals sign and similar cases. Client...

AZL-81957 CVE-2026-34080 affecting package xdg-dbus-proxy 0.1.6-2

xdg-dbus-proxy is a filtering proxy for D-Bus connections. Prior to 0.1.7, a policy parser vulnerability allows bypassing eavesdrop restrictions. The proxy checks for eavesdrop=true in policy rules but fails to handle eavesdrop ='true' with a space before the equals sign and similar cases. Client...

CVE-2026-34080: Improper Validation of Unsafe Equivalence in Input

xdg-dbus-proxy is a filtering proxy for D-Bus connections. Prior to 0.1.7, a policy parser vulnerability allows bypassing eavesdrop restrictions. The proxy checks for eavesdrop=true in policy rules but fails to handle eavesdrop ='true' with a space before the equals sign and similar cases. Client...

AZL-81959 CVE-2026-34933 affecting package avahi for versions less than 0.8-8

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. Prior to version 0.9-rc4, any unprivileged local user can crash avahi-daemon by sending a single D-Bus method call with conflicting publish flags. This issue has been patched in version...

CVE-2026-34933: Reachable Assertion

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. Prior to version 0.9-rc4, any unprivileged local user can crash avahi-daemon by sending a single D-Bus method call with conflicting publish flags. This issue has been patched in version...

AZL-85335 CVE-2026-4948 affecting package firewalld for versions less than 2.0.2-4

A flaw was found in firewalld. A local unprivileged user can exploit this vulnerability by mis-authorizing two runtime D-Bus Desktop Bus setters, setZoneSettings2 and setPolicySettings. This mis-authorization allows the user to modify the runtime firewall state without proper authentication,...

CVE-2026-4948: Incorrect Execution-Assigned Permissions

A flaw was found in firewalld. A local unprivileged user can exploit this vulnerability by mis-authorizing two runtime D-Bus Desktop Bus setters, setZoneSettings2 and setPolicySettings. This mis-authorization allows the user to modify the runtime firewall state without proper authentication,...

Important: Red Hat Security Advisory: udisks2 security update

An update for udisks2 is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available fo...

CVE-2026-4105 Systemd: systemd: privilege escalation via improper access control in registermachine d-bus method

A flaw was found in systemd. The systemd-machined service contains an Improper Access Control vulnerability due to insufficient validation of the class parameter in the RegisterMachine D-Bus Desktop Bus method. A local unprivileged user can exploit this by attempting to register a machine with a...

CVE-2026-4105: Improper Access Control

A flaw was found in systemd. The systemd-machined service contains an Improper Access Control vulnerability due to insufficient validation of the class parameter in the RegisterMachine D-Bus Desktop Bus method. A local unprivileged user can exploit this by attempting to register a machine with a...

Fedora 42 : dnf5 (2026-beac8e1f11)

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-beac8e1f11 advisory. This release fixes CVE-2026-3836 a crash in dnf5daemon-server when receiving an unknown locale from a D-Bus client. Tenable has extracted the...