CVE-2026-98147 Linux CVE debrief

Who should care

Linux kernel maintainers and users, as well as organizations relying on Linux-based systems, should be aware of this vulnerability. Maintainers are responsible for updating the kernel to ensure system stability and security. Users and organizations using Linux kernels should verify their version and apply updates if necessary to mitigate potential risks associated with this vulnerability. Additionally, security teams

Why it matters

A Linux kernel vulnerability was resolved, involving printk and kthread_run failure handling. Linux kernel maintainers and users should verify their kernel version and update if necessary to prevent potential issues.

• Verify Linux kernel version and update if necessary to prevent potential issues

Technical summary

The Linux kernel vulnerability involves a resolved issue with printk and kthread_run failure handling. The problem was that the kernel would previously warn on kthread_run failure, which could be triggered by __kthread_create_on_node() returning -EINTR upon receiving a SIGKILL signal. The resolution modifies the kernel's behavior to handle such failures without issuing a warning, improving system stability and aligning with expected behavior during signal interruptions. This change demonstrates the ongoing efforts to enhance the Linux kernel's reliability and

Defensive priority

Verify Linux kernel version and update if necessary

Recommended defensive actions

• Verify Linux kernel version
• Update Linux kernel if necessary
• Review compensating controls for exposed systems
• Check relevant monitoring, detection, and logs for exposed assets
• Confirm whether affected product deployments exist in managed environments

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. The official CVE Program record and NVD detail page offer some context but do not delve into specific technical details or affected scope. Further verification is necessary to understand the potential impact and to confirm whether affected product deployments exist in managed environments. The lack of detailed information in public sources necessitates a cautious approach, with defenders needing to review

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.