Ubuntu still has not released patch for Linux 0day RCE in almost 3 weeks

8 relevance

Critical unpatched Linux RCE is highly actionable for infrastructure engineers.

Security freenode.net

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Why It Matters

As a platform engineer running self-hosted infrastructure on Ubuntu LTS, this unpatched 0day directly threatens your tenant isolation and privilege boundaries, demanding immediate risk assessment and mitigation planning.

Key Takeaways

Audit your Ubuntu LTS hosts for CVE-2026-98432 exposure and implement network-level access controls or kernel hardening while awaiting the official patch.

Ubuntu still has not released patch for Linux 0day RCE in almost 3 weeks

Summary

Ubuntu has not shipped patched kernels for CVE-2026-98432, a CVSS 9.8 remote code execution vulnerability, leaving 22.04, 24.04, and 26.04 LTS releases exposed for nearly three weeks. No ETA for fixes exists, forcing operators of internet-facing or multi-tenant self-hosted systems to choose between stock kernels, out-of-tree mitigations, or migrating to already-patched releases. The delay undermines Ubuntu's LTS security guarantees for isolation and privilege boundaries.

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