PT-2026-63427 · Red Hat · Red Hat Enterprise Linux 10+5

CVE-2026-16552 · Publicado 2026-07-22 · Atualizado 2026-07-22

Mitre

CVSS v3.1

6.3

Média

Vetor base

AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

A flaw was found in systemd-tmpfiles. When processing a tmpfiles.d configuration entry that writes to a file, systemd-tmpfiles can follow a symbolic link placed by an unprivileged local user, and an existing safety check does not detect this specific case because it always treats transitions away from the root user as safe. On systems where a tmpfiles.d configuration targets a path an unprivileged user can influence, this could allow that user to redirect a privileged systemd-tmpfiles write to a file of their choosing, though the content written remains determined by the existing configuration rather than by the unprivileged user. The highest threat from this vulnerability is to integrity.

Correção

Link Following

Enumeração de Fraquezas

CWE-59

Identificadores relacionados

CVE-2026-16552

Produtos afetados

Red Hat Enterprise Linux 10

Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 9

Red Hat Hardened Images

Red Hat Openshift Container Platform 4

Referências · 5

• https://github.com/systemd/systemd/blob/b9ef5951f8f9e156479494fdb9ca6274cb3d3c53/src/basic/chase.c · Nota
• https://github.com/systemd/systemd/blob/b9ef5951f8f9e156479494fdb9ca6274cb3d3c53/src/tmpfiles/tmpfiles.c · Nota
• https://bugzilla.redhat.com/show_bug.cgi?id=2506073 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-16552 · Nota de Segurança
• https://access.redhat.com/security/cve/CVE-2026-16552 · Nota