UnratedFix available
drm/vc4: hdmi: Avoid hang with debug registers when suspended
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 6.1.120, 6.11.11, 6.12.2, 6.6.64
- CVEs
- CVE-2024-56683
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 08:46 UTC · Revision 1
Source evidence
drm/vc4: hdmi: Avoid hang with debug registers when suspended
core-osv · Original sourcePublished 28 Dec 2024, 09:46 UTC
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.
osv:CVE-2024-56683
Kernel
Fixed versions: 6.1.120, 6.6.64, 6.11.11, 6.12.2
Complete source record
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"id": "c87fd6a9f4461464a2eac92b72a36694dd46c43b300906fae51ff0f3a1179671",
"url": "https://osv.dev/vulnerability/CVE-2024-56683",
"method": "structured",
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"title": "drm/vc4: hdmi: Avoid hang with debug registers when suspended",
"summary": "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.",
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"modified": "2026-10-28T02:30:34.170422974Z",
"provider": "osv",
"references": [
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"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html",
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"https://nvd.nist.gov/vuln/detail/CVE-2024-56683",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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"evidence": "/id"
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"security_relevant": true,
"severity_evidence": null
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"source_id": "core-osv",
"document_id": 501233,
"published_at": "2024-12-28T09:46:11.183+00:00"
}