Linux Kernel HDMI I2C Read Vulnerability in GMA500

CVE-2026-98886

What is CVE-2026-98886?

A vulnerability exists in the Linux kernel related to HDMI I2C transactions in the GMA500 driver. The function responsible for reading these transactions, xfer_read(), fails to handle timeouts appropriately, potentially causing the system to wait indefinitely if a transaction does not progress. This can lead to unexpected behavior, as the function does not propagate interrupted waits or report specific errors. The fix ensures that the system returns a timeout error when the wait period expires and accurately reflects transfer errors, improving overall reliability and security.

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