CVE-2026-16552
CVE-2026-16552: 1 tracked advisory record across Red Hat. Compare source-reported impact, fixes and remediation.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityMedium0.0
Medium [CVE-2026-16552] systemd-tmpfiles symlink-redirected arbitrary file overwrite via a CHASE_SAFE root-to-unprivileged ownership transition bypass
CVE-2026-16552Source published Source updated
[REJECTED] 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. This CVE has been marked as rejected by the assigning CNA. Red Hat severity: not rated —…
- Affected products in this advisory
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- Restrict or audit any custom tmpfiles.d configuration entries (e.g. authored via configuration-management tooling) that use the 'w' item type against paths under /run/user/*, per-user home directories, or other locations where an unprivileged user can influence path resolution, until an upstream fix is available.
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