CVE-2020-36766

A flaw was found in cec_adap_g_log_addrs in drivers/media/cec/core/cec-api.c in the Linux Kernel. This issue may allow a local attacker to leak one byte of kernel memory on specific hardware to unprivileged users, directly assigning log_addrs with a hole in the structure, causing a kernel information leak problem.

Mitigation

Mitigation for this issue is to skip loading the affected module HDMI Consumer Electronics Control framework driver "cec" onto the system until we have a fix available. This can be done by a blacklist mechanism, which will ensure the driver is not loaded at the boot time.

How do I blacklist a kernel module to prevent it from loading automatically?  
https://access.redhat.com/solutions/41278