Linux Kernel ASTDP Transmitter Video Signal Enablement Timeout Vulnerability

A vulnerability in the Linux kernel's ASTDP transmitter has been addressed, which involved a timeout issue when enabling the video signal. The transmitter could take up to one second to activate the signal, while the existing timeout was only 200 milliseconds. This discrepancy led to a kernel error message. The timeout has now been increased to one second. Although the error message indicated a problem, the video signal was still successfully enabled. This issue has been present for some time, but recent versions of the AST driver began to warn about the missing timeout.

Impact

The vulnerability could cause a kernel warning message about a timeout issue when enabling the video signal, although the signal would still be activated successfully.