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.
Metrics
Affected Vendors & Products
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History
Mon, 30 Dec 2024 01:30:00 +0000
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cvssV3_1
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Sat, 28 Dec 2024 10:00:00 +0000
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Description | 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. | |
Title | drm/vc4: hdmi: Avoid hang with debug registers when suspended | |
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Status: PUBLISHED
Assigner: Linux
Published: 2024-12-28T09:46:11.183Z
Updated: 2025-05-04T13:01:13.648Z
Reserved: 2024-12-27T15:00:39.846Z
Link: CVE-2024-56683

No data.

Status : Received
Published: 2024-12-28T10:15:10.773
Modified: 2024-12-28T10:15:10.773
Link: CVE-2024-56683
