High [CVE-2026-3338] Signature bypass due to improper validation in PKCS7_verify()
This high-severity Red Hat Linux advisory covers CVE-2026-3338 affecting Red Hat Trusted Artifact Signer 1.3, Confidential Compute Attestation, Red Hat Enterprise Linux 10.
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Summary
Signature bypass due to improper validation in PKCS7_verify(). Red Hat rates this important (CVSS 7.5).
Weakness: CWE-347. Affected package(s): rhtas/tuffer-rhel9:1773307309, rhtas/tuftool-rhel9:1773307309.
Resolved in Red Hat advisory RHSA-2026:5459 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Trusted Artifact Signer 1.3; Confidential Compute Attestation; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; and 2 more.
- rhtas/tuffer-rhel9:1773307309
- rhtas/tuftool-rhel9:1773307309
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:5459
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:5459 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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