Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: ASoC: SDCA: Make UMP message size check more robust If message offset was larger… (CVE-2026-80900)

The Linux kernel contained a vulnerability in the ASoC SDCA subsystem where the check for UMP message sizes was flawed. When the message offset exceeded the buffer length, the size validation could incorrectly succeed, potentially allowing malformed messages to be processed. The vulnerability was addressed by refactoring the size check logic to ensure it correctly handles invalid message sizes, preventing improper acceptance of oversized or malformed messages.

The vulnerability could allow malformed UMP messages with invalid sizes to bypass size checks, potentially leading to unexpected behavior in the affected kernel component. No specific impact details such as privilege escalation or denial of service are provided in the available data.

A fix has been implemented in the Linux kernel to make the UMP message size check more robust. Users should update to the fixed kernel version once available. Patch status is not explicitly confirmed in the provided data; therefore, check the official Linux kernel advisories or repositories for the specific patch and update guidance.