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.
History

Mon, 30 Dec 2024 01:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate


Sat, 28 Dec 2024 10:00:00 +0000

Type Values Removed Values Added
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
References

cve-icon MITRE

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

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2024-12-28T10:15:10.773

Modified: 2024-12-28T10:15:10.773

Link: CVE-2024-56683

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-12-28T00:00:00Z

Links: CVE-2024-56683 - Bugzilla