The vulnerability, tracked as CVE-2026-98432, carries a critical CVSS score of 9.8 and enables remote code execution across affected Linux systems. Because official kernel updates remain unavailable for Ubuntu LTS installations, production systems cannot natively close the security gap. In the absence of an official timeline from the vendor, administrators are forced to consider out-of-tree mitigations or migrate critical workloads to patched kernels.
Key points
Multi-tenant and internet-facing servers running standard LTS kernels face heightened exp…: Multi-tenant and internet-facing servers running standard LTS kernels face heightened exposure to potential remote attacks.
Isolation and privilege boundaries remain compromised on affected distributions until off…: Isolation and privilege boundaries remain compromised on affected distributions until official kernel packages are published.
System administrators must currently weigh using out-of-tree mitigations or migrating wor…: System administrators must currently weigh using out-of-tree mitigations or migrating workloads to already patched kernels.
Sources checked by our analysis pipeline: 1
Ubuntu LTS kernels still unfixed for critical CVE-2026-98432
No patched kernels are available yet for 22.04, 24.04, or 26.04 despite a CVSS 9.8 rating.
Ubuntu has not shipped fixed kernels for CVE-2026-98432, a critical vulnerability scored CVSS 9.8, leaving the 22.04, 24.04, and 26.04 LTS releases without a vendor update.
Operators running those releases therefore have no official kernel package that closes the hole. The gap matters most for internet-facing and multi-tenant self-hosted systems that rely on Ubuntu’s LTS kernels for isolation and privilege boundaries; until packages appear, those hosts remain exposed to whatever remote or local attack the CVE enables.
Ubuntu has not announced an ETA for the fixes. In the interim, affected administrators are left to decide whether to stay on the stock kernel, apply out-of-tree mitigations if any exist, or move workloads onto releases or kernels that already carry the patch.
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