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CVE-2024-56683

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: hdmi: Avoid hang with debug registers when suspended Trying to read /sys/kernel/de…

Impact

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: hdmi: Avoid hang with debug registers when suspended Trying to read /sys/kernel/debug/dri/1/hdmi1_regs when the hdmi is disconnected results in a fatal system hang. This is due to the pm suspend code disabling the dvp clock. That is just a gate of the 108MHz clock in DVP_HT_RPI_MISC_CONFIG, which results in accesses hanging AXI bus. Protect against this.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.18.18 before 5.19
from 5.19.2 before 6.1.120
from 6.2 before 6.6.64
from 6.7 before 6.11.11
from 6.12 before 6.12.2

References