Linode Investigates Critical Kernel RCE

This is a patching fire drill, not evidence that Linode itself was compromised.

• –The flaw requires no authentication and can affect ordinary TCP servers, while demonstrated root-level RCE targets Linux hosts running an MPTCP listener.
• –Anthropic reports that Claude helped develop a working exploit chain, including KASLR bypass and kernel control-flow hijacking, highlighting the accelerating security impact of capable AI models.
• –Linode has disclosed mitigation work but has not published affected configurations, exploitation evidence, or a completed impact assessment.
• –Developers should inventory kernel versions, review MPTCP exposure, apply vendor-backported patches, and reboot affected workloads promptly.
• –The incident reinforces that cloud customers still own kernel and workload patching, even when the provider is investigating platform-wide risk.