Red Hat has released security updates addressing a critical use-after-free vulnerability carrying a 9.8 CVSS score within the Linux kernel’s IPv4 TCP subsystem. The flaw allows remote, unauthenticated attackers to achieve remote code execution. Ubuntu has made corresponding patches available in its testing repositories. Administrators should apply the updated kernels immediately to mitigate potential exploitation.

Linux KernelRCECVE-2026-98432Patch
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