CVE-2026-80743 Linux CVE debrief

Who should care

Users of the Linux kernel, specifically those using the ASoC xilinx formatter_pcm driver, should apply kernel updates to ensure the driver is properly configured. System administrators and security teams responsible for Linux kernel-based systems should review system configurations and monitor for related issues. Additionally, developers working with the ASoC xilinx formatter_pcm driver should verify their implementations and stay informed about future updates.

Technical summary

The irq handlers in the ASoC xilinx formatter_pcm driver were not properly set up, causing a potential crash when an interrupt occurred before the driver data was set. The fix involves passing the private data directly as the devm_request_irq() argument instead of the device pointer, matching what the handlers expect. This change ensures that the driver data is properly set up before interrupts are handled, preventing potential crashes.

Defensive priority

Apply kernel updates to ensure the ASoC xilinx formatter_pcm driver is properly configured.

Recommended defensive actions

• Apply kernel updates to ensure the ASoC xilinx formatter_pcm driver is properly configured.
• Review system configurations for potential irq handler issues.
• Monitor system logs for related errors.
• Perform a thorough review of the Linux kernel patch notes and implementation details.
• Verify system configurations for irq handler setup and potential vulnerabilities.
• Conduct regular security audits to identify potential issues with the ASoC xilinx formatter_pcm driver.
• Track changes to the Linux kernel and ASoC xilinx formatter_pcm driver for future updates.

Evidence notes

The CVE record was published on 2026-09-03T13:06:13.590Z. The NVD entry is currently Received. Evidence is limited to CVE Program and NVD details. Defenders should verify system configurations and apply kernel updates to ensure the ASoC xilinx formatter_pcm driver is properly configured. Additional verification tasks may be necessary due to limited source information.

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.