CVE-2026-97451 Linux CVE debrief

Who should care

Linux kernel administrators and developers should assess exposure and apply patches to address the vulnerability. This vulnerability has a high CVSS score of 8.4, indicating a high-severity issue that requires prompt attention.

Why it matters

CVE-2026-97451 is a high-severity vulnerability in the Linux kernel that requires prompt patching to prevent potential exploitation. Linux kernel administrators and developers should assess exposure and apply patches to address the vulnerability.

• Verify Linux kernel versions and configurations to ensure they are up-to-date and patched
• Monitor Linux kernel deployments for potential exploitation attempts
• Apply patches to Linux kernel deployments to address the ACPICA integer overflow vulnerability

Technical summary

The Linux kernel vulnerability, tracked as CVE-2026-97451, involves an integer overflow in the acpi_ex_opcode_3A_1T_1R() function. An overflow check for Index + Length has been added to prevent integer overflow when calculating the truncation length, which could lead to a negative size parameter being passed to memcpy(). This vulnerability has a high CVSS score of 8.4, indicating a high-severity issue that requires prompt attention from Linux kernel administrators and developers. They should assess exposure and apply patches to address the vulnerability. The CVE record and NVD detail page provide information on the vulnerability, including its description and CVSS score.

Defensive priority

High-priority patching required for Linux kernel deployments

Recommended defensive actions

• Apply patches to Linux kernel deployments to address the ACPICA integer overflow vulnerability
• Review Linux kernel versions and configurations to ensure they are up-to-date and patched
• Monitor Linux kernel deployments for potential exploitation attempts
• Verify Linux kernel deployments are patched and up-to-date
• Review compensating controls for exposed Linux kernel deployments
• Track Linux kernel deployment exceptions and retest remediated assets
• Check relevant monitoring, detection, and logs for exposed Linux kernel assets

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, including its description and CVSS score. Three source references from the Linux kernel Git repository are also available, detailing the specific commits addressing the issue.

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.