CVE-2026-64313 Linux CVE debrief

Who should care

Linux kernel maintainers, Linux distribution maintainers, and users of affected Linux kernel versions should assess exposure and prioritize patching. The vulnerability affects Linux kernel versions and requires patching for affected versions. Linux kernel maintainers and users should verify Linux kernel versions for exposure and assess and prioritize patching for affected versions.

Why it matters

A vulnerability in the Linux kernel's crypto: ecc module allows for a carry overflow in vli multiplication, which can lead to potential security issues. Linux kernel maintainers and users should assess exposure and prioritize patching.

• Verify Linux kernel versions for exposure
• Assess and prioritize patching for affected versions
• Monitor Linux kernel security advisories for future updates

Technical summary

The Linux kernel's crypto: ecc module is vulnerable to a carry overflow in vli multiplication. This issue was introduced in commit 3c4b23901a0c and was resolved through a series of commits. The vulnerability has a CVSS score of 8.8 and is considered HIGH severity. Linux kernel maintainers and users should assess exposure and prioritize patching. The issue affects Linux kernel versions and requires patching for affected versions. The vulnerability allows for potential security issues and requires verification of Linux kernel versions for exposure.

Defensive priority

Linux kernel maintainers and users should assess exposure and prioritize patching.

Recommended defensive actions

• Review Linux kernel versions and assess exposure
• Apply patches or updates to affected versions
• Monitor Linux kernel security advisories for future updates
• Verify Linux kernel versions for exposure
• Assess and prioritize patching for affected versions
• Track exceptions and retest remediated assets
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and source item provide details on the vulnerability, its resolution, and affected versions. The vulnerability has a CVSS score of 8.8 and is considered HIGH severity. The issue was introduced in commit 3c4b23901a0c and was resolved through a series of commits. Linux kernel maintainers and users should assess exposure and prioritize patching. The issue affects Linux kernel versions and requires patching for affected versions.

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.