CVE-2026-97453 Linux CVE debrief

Who should care

Linux kernel developers and maintainers, Linux distribution vendors, and users of Linux-based systems should verify Linux kernel version and ACPICA usage in their environment to determine potential exposure and remediation priority. Security teams and vulnerability management teams should review the patch notes for ACPICA package length validation fix to assess remediation priority.

Why it matters

A vulnerability in the Linux kernel's ACPICA package length validation requires verification of Linux kernel version and ACPICA usage in your environment to determine potential exposure and remediation priority.

• Verify Linux kernel version and ACPICA usage in your environment to determine potential exposure
• Review Linux kernel patch notes for ACPICA package length validation fix to assess remediation priority

Technical summary

The Linux kernel has a vulnerability in the ACPICA, specifically in the `acpi_ps_get_next_package_length()` function. The issue is related to package length reading not being properly validated. This vulnerability requires verification of Linux kernel version and ACPICA usage in your environment to determine potential exposure and remediation priority. The fix involves validating package length reading in acpi_ps_get_next_package_length(). Affected Linux kernel developers and maintainers should review patch notes for ACPICA package length validation fix.

Defensive priority

Low

Recommended defensive actions

• Review Linux kernel patch notes for ACPICA package length validation fix
• Assess Linux kernel version and ACPICA usage in your environment
• Verify package length validation in `acpi_ps_get_next_package_length()` function
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• 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.

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. The Linux kernel patch notes indicate a fix for ACPICA package length validation. To verify potential exposure, defenders should check Linux kernel version and ACPICA usage in their environment. The `acpi_ps_get_next_package_length()` function's package length validation fix should be reviewed for remediation priority. Additional Linux kernel patch notes for ACPICA package length validation fix are referenced.

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.