CVE-2026-74292 Linux CVE debrief

Who should care

Linux kernel maintainers, Linux distribution maintainers, and users of Linux-based systems, especially those using tegra-based systems, should assess their exposure and apply patches as necessary.

Why it matters

This vulnerability in the Linux kernel's ASoC tegra component requires validation of written enum values to prevent out-of-range reads. Linux kernel maintainers and users, especially those using tegra-based systems, should assess exposure and apply patches.

• Potential for denial of service due to out-of-range reads.
• Need for validation of enum values to prevent array out-of-bounds access.
• Possible data corruption or system instability if exploited.
• Verification of Linux kernel version and application of patches is necessary.

Technical summary

The tegra210_ahub module in the Linux kernel does not properly validate written enum values. This can lead to an out-of-range read of the values array. The issue arises because the check for enum value validity occurs after the array access. To address this, the check for enum value validity should be moved before the array access. Official fixes are available in various Linux kernel commits. Linux kernel maintainers and users, especially those using tegra-based systems, should review and apply available patches. The vulnerability was introduced in the tegra210_ahub module of the Linux kernel.

Defensive priority

Medium priority for Linux kernel maintainers and users, especially those using tegra-based systems.

Recommended defensive actions

• Review and apply available patches from Linux kernel maintainers.
• Update Linux kernel to a version that includes the fix.
• Monitor Linux kernel updates for future security patches.
• 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 vulnerability was introduced in the tegra210_ahub module of the Linux kernel. The existing check for enum value validity occurs too late, allowing for an out-of-range read of the values array. Official fixes are available in various Linux kernel commits.

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.