CVE Watch22 jul 2026

CVE-2026-16552

A flaw was found in systemd-tmpfiles. When processing a tmpfiles.d configuration entry that writes to a file, systemd-tmpfiles can follow a

CVSS

6.3

Medio

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 22 jul 2026 · Última mod.: 22 jul 2026 · CWE-59

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

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.

Referencias oficiales

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