Medium6.5Red Hat Linux

Medium [CVE-2026-4426] Denial of Service via malformed ISO file processing

This medium-severity Red Hat Linux advisory covers CVE-2026-4426 affecting Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7.

CVE-2026-4426 Published Mar 19, 2026

CVE-2026-4426

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

Denial of Service via malformed ISO file processing. Red Hat rates this moderate (CVSS 6.5).

Weakness: CWE-1335. Affected package(s): libarchive-main.

Resolved in Red Hat advisory RHSA-2026:8944 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; and 2 more.

Affected versions

libarchive-main-3.8.7-1.hum1

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

RHSA-2026:8944

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Update the affected package(s) to the fixed version shipped in RHSA-2026:8944 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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