High [CVE-2026-39829] Denial of Service via crafted public key with excessive parameters
This high-severity Red Hat Linux advisory covers CVE-2026-39829 affecting RHEM 1.0 for RHEL 9, Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux AppStream (v. 8).
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Summary
Denial of Service via crafted public key with excessive parameters. Red Hat rates this important (CVSS 7.5).
Weakness: CWE-1284. Affected package(s): advanced-cluster-security/rhacs-roxctl-rhel8:1781686458, advanced-cluster-security/rhacs-roxctl-rhel8:1781686446, buildah.
Resolved in Red Hat advisory RHSA-2026:29455 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: RHEM 1.0 for RHEL 9; Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 8); Red Hat Enterprise Linux AppStream (v. 9); and 51 more.
- advanced-cluster-security/rhacs-roxctl-rhel8:1781686458
- advanced-cluster-security/rhacs-roxctl-rhel8:1781686446
- buildah-2:1.43.1-2.el9_8
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:29455
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-2026:29455 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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