Affected: AlmaLinux:10: systemd-rpm-macros, AlmaLinux:10: systemd-ukify

The systemd packages contain systemd, a system and service manager for Linux, compatible with the SysV and LSB init scripts. It provides aggressive parallelism capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, and keeps track of processes using Linux cgroups. In addition, it supports snapshotting and restoring of the system state, maintains mount and automount points, and implements an elaborate transactional dependency-based service control logic. It can also work as a drop-in replacement for sysvinit.

Security Fix(es):

* systemd: systemd: Arbitrary code execution or Denial of Service via spurious IPC API call data (CVE-2026-29111)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

systemd, a system and service manager, (as PID 1) hits an assert and freezes execution when an unprivileged IPC API call is made with spurious data. On version v249 and older the effect is not an assert, but stack overwriting, with the attacker controlled content. From version v250 and newer this is not possible as the safety check causes an assert instead. This IPC call was added in v239, so versions older than that are not affected. Versions 260-rc1, 259.2, 258.5, and 257.11 contain patches. No known workarounds are available.

Affected: openEuler:24.03-LTS-SP2: systemd

systemd is a system and service manager that runs as PID 1 and starts the rest of the system. Security Fix(es):

systemd, a system and service manager, (as PID 1) hits an assert and freezes execution when an unprivileged IPC API call is made with spurious data. On version v249 and older the effect is not an assert, but stack overwriting, with the attacker controlled content. From version v250 and newer this is not possible as the safety check causes an assert instead. This IPC call was added in v239, so versions older than that are not affected. Versions 260-rc1, 259.2, 258.5, and 257.11 contain patches. No known workarounds are available.(CVE-2026-29111)

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 specific class value, which may leave behind a usable, attacker-controlled machine object. This allows the attacker to invoke methods on the privileged object, leading to the execution of arbitrary commands with root privileges on the host system.(CVE-2026-4105)

libsystemd0-259.5-1.3 on GA media

libcap: libcap: Privilege escalation via TOCTOU race condition in cap_set_file() systemd: systemd: Arbitrary code execution or Denial of Service via spurious IPC API call data crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages github.com/apache/thrift: Apache Thrift: Integer Overflow in TFramedTransport Go implementation

Affected: Rocky Linux:9: systemd

The systemd packages contain systemd, a system and service manager for Linux, compatible with the SysV and LSB init scripts. It provides aggressive parallelism capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, and keeps track of processes using Linux cgroups. In addition, it supports snapshotting and restoring of the system state, maintains mount and automount points, and implements an elaborate transactional dependency-based service control logic. It can also work as a drop-in replacement for sysvinit.

Security Fix(es):

* systemd: systemd: Arbitrary code execution or Denial of Service via spurious IPC API call data (CVE-2026-29111)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Security update for systemd

Affected: Ubuntu:Pro:20.04:LTS: systemd, Ubuntu:22.04:LTS: systemd, Ubuntu:24.04:LTS: systemd, Ubuntu:25.10: systemd

systemd, a system and service manager, (as PID 1) hits an assert and freezes execution when an unprivileged IPC API call is made with spurious data. On version v249 and older the effect is not an assert, but stack overwriting, with the attacker controlled content. From version v250 and newer this is not possible as the safety check causes an assert instead. This IPC call was added in v239, so versions older than that are not affected. Versions 260-rc1, 259.2, 258.5, and 257.11 contain patches. No known workarounds are available.

Ein Angreifer kann mehrere Schwachstellen in systemd ausnutzen, um einen Denial of Service Angriff durchzuführen oder Code mit Administratorrechten auszuführen.