Linux Kernel Vulnerability: ASoC SDCA Message Size Check Flaw

CVE-2026-80900

What is CVE-2026-80900?

A vulnerability in the Linux kernel's ASoC (ALSA System on Chip) SDCA (Smart Device Control Architecture) allows for improper validation of message sizes. This can lead to scenarios where the message offset exceeds the buffer length, enabling size checks to incorrectly validate, potentially causing system instability or exploitation. A refactor of the size checking mechanism has been implemented to enhance its robustness against invalid size inputs, thereby strengthening the overall security of the Linux kernel.

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