CVE-2026-74294 Linux CVE debrief

Who should care

Defenders responsible for Linux kernel-based systems, particularly those using the ASoC meson aiu component, should assess their exposure and apply the patch to prevent potential attacks.

Why it matters

The CVE-2026-74294 vulnerability in the Linux kernel's ASoC meson aiu component requires verification and patching to prevent potential local privilege escalation attacks and system instability.

• Local privilege escalation attacks may be possible if the vulnerability is not addressed.
• System crashes or instability may occur if out-of-range enum values are processed.
• Defenders should verify the Linux kernel version and apply the patch to prevent potential attacks.
• System administrators should review system configurations and ensure that the ASoC meson aiu component is properly configured and secured.

Technical summary

The AIU HDMI and internal codec mux put callbacks in the Linux kernel's ASoC meson aiu component did not properly validate written enum values before converting them, which could lead to out-of-range values being processed. This issue has been resolved by adding validation for the enum values, similar to the validation already performed by the G12A HDMI and internal codec mux controls. The vulnerability requires verification and patching to prevent potential local privilege escalation attacks and system instability. Defenders should prioritize verifying the Linux kernel version and applying the patch to prevent potential local privilege escalation attacks.

Defensive priority

Defenders should prioritize verifying the Linux kernel version and applying the patch to prevent potential local privilege escalation attacks.

Recommended defensive actions

• Verify the Linux kernel version and apply the patch to ensure the vulnerability is addressed.
• Review system configurations and ensure that the ASoC meson aiu component is properly configured and secured.
• Monitor system logs for potential exploitation attempts.
• Perform a thorough review of system configurations and ensure that the ASoC meson aiu component is properly secured.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score and vector. The Linux kernel patch is available. Defenders should verify the Linux kernel version and apply the patch to prevent potential local privilege escalation attacks. The AIU HDMI and internal codec mux put callbacks in the Linux kernel's ASoC meson aiu component did not properly validate written enum values. This could lead to out-of-range values being processed, potentially causing local privilege escalation attacks. The issue has

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.