CVE-2026-93810 Linux CVE debrief

Who should care

Linux kernel maintainers, Linux distribution maintainers, and users of Linux-based systems should assess exposure and verify patch deployment. The vulnerability affects Linux kernel deployments and requires verification of patch deployment and assessment of exposure.

Why it matters

CVE-2026-93810 is a high-severity vulnerability in the Linux kernel that requires verification of patch deployment and assessment of exposure.

• Verify patch deployment for cachefiles_create_tmpfile() fix
• Assess exposure of Linux kernel deployments to CVE-2026-93810
• Monitor Linux kernel updates for potential related vulnerabilities

Technical summary

The Linux kernel vulnerability CVE-2026-93810 is a double fput() issue in cachefiles_create_tmpfile(). This vulnerability affects Linux kernel deployments and requires verification of patch deployment and assessment of exposure. The vulnerability has a CVSS score of 7 and is classified as HIGH. Linux kernel maintainers, Linux distribution maintainers, and users of Linux-based systems should assess exposure and verify patch deployment. The official CVE Program record and NVD detail page provide source-provided CVE metadata and source-specific vulnerability assessment.

Defensive priority

Linux kernel maintainers and users should assess exposure and verify patch deployment.

Recommended defensive actions

• Assess exposure of Linux kernel deployments to CVE-2026-93810
• Verify patch deployment for cachefiles_create_tmpfile() fix
• Monitor Linux kernel updates for potential related vulnerabilities
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but affected versions and exploitation status require verification. The vulnerability has a CVSS score of 7 and is classified as HIGH. Linux kernel maintainers, Linux distribution maintainers, and users of Linux-based systems should assess exposure and verify patch deployment. The official CVE Program record and NVD detail page provide source-provided CVE metadata and source-specific vulnerability assessment.

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.