Vulnerabilidades de systemd

CVE-2026-40228

In systemd 259, systemd-journald can send ANSI escape sequences to the terminals of arbitrary users when a "logger -p emerg" command is executed, if ForwardToWall=yes is set.

CVE-2026-40226

In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.

• Actualiza a 257.9-0ubuntu2.5

CVE-2026-40225

In udev in systemd before 260, local root execution can occur via malicious hardware devices and unsanitized kernel output.

• Actualiza a 257.9-0ubuntu2.3

systemd: Local unprivileged user can trigger an assert

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.

• Actualiza a 257.9-0ubuntu2.3