CVE-2026-90145 Linux CVE debrief

Who should care

Linux kernel developers and maintainers, Linux distribution vendors, and users of Linux-based systems with the hinic3 driver deployed should assess exposure and apply the provided patch to prevent potential system crashes, network issues, and exploitation. This includes operators, platform administrators, vulnerability management teams, and security teams responsible for maintaining and securing Linux kernel deployments.

Why it matters

A vulnerability in the Linux kernel's hinic3 driver requires patching to prevent potential system crashes, network issues, and exploitation. Linux kernel developers, maintainers, and users should assess exposure and apply the provided patch.

• Potential for out-of-bounds DMA reads or IOMMU faults, leading to system crashes or instability.
• Transmission of corrupted packets with incomplete checksums, potentially causing network issues.
• Need for patching and updating Linux kernel deployments to prevent exploitation.
• Verification of Linux kernel versions and hinic3 driver usage to assess exposure.

Technical summary

The vulnerability in the Linux kernel's hinic3 driver arises from a mismatch in skb linearization and incorrect handling of checksum offload for unsupported tunnel packets. This can lead to out-of-bounds DMA reads or IOMMU faults, and transmission of corrupted packets with incomplete checksums. The fix involves moving the hinic3_tx_offload() call before calculating 'num_sge' and propagating skb_checksum_help() errors.

Defensive priority

High-priority patching recommended for Linux kernel deployments using the hinic3 driver.

Recommended defensive actions

• Apply the patch provided by the Linux kernel maintainers to update the hinic3 driver.
• Review and update Linux kernel deployments to ensure the patched version is used.
• Monitor for potential issues with checksum offload for tunnel packets in the hinic3 driver.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and affected components. However, specific version information and exploitation details are not provided.

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.