CVEvulnerability

CVE-2022-45873

5.5 MEDIUM Published 2022-11-23 Modified 2026-10-14 Official page ↗
Status
Modified
Published
2022-11-23
Last modified
2026-10-14
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-400

Description

systemd 250 and 251 allows local users to achieve a systemd-coredump deadlock by triggering a crash that has a long backtrace. This occurs in parse_elf_object in shared/elf-util.c. The exploitation methodology is to crash a binary calling the same function recursively, and put it in a deeply nested directory to make its backtrace large enough to cause the deadlock. This must be done 16 times when MaxConnections=16 is set for the systemd/units/systemd-coredump.socket file.

Affected configurations

• systemd project systemd (>= 250 <= 251) • systemd project systemd 252 • fedoraproject fedora 36

Related

Weakness · CWE (1)

  • CWE-400 Uncontrolled Resource Consumption weakness

References