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NVD / CVE Program· CNA Linux

CVE-2024-56683: drm/vc4: hdmi: Avoid hang with debug registers when suspended

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.22% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 0ea29bd7d9400d3629683244d609358ed1b12075, 16f351adf733a182224ad24916d7673aa6df02df, 223ee2567a55e4f80315c768d2969e6a3b9fb23d.

Low priority for now. Upgrade to Linux Linux 0ea29bd7d9400d3629683244d609358ed1b12075, 16f351adf733a182224ad24916d7673aa6df02df, 223ee2567a55e4f80315c768d2969e6a3b9fb23d or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Dec 28, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 12th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-56683

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel5.18.18 and later · before 5.19
  • linux linux kernel5.19.2 and later · before 6.1.120
  • linux linux kernel6.2 and later · before 6.6.64
  • linux linux kernel6.7 and later · before 6.11.11
  • linux linux kernel6.12 and later · before 6.12.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 1da00a63f0e798f0fd0dcf623b16c16e13f93615, f70c25cf34f91cc6f40e79a5b7565fd0272d7396, 6.0affected
    • 25eb441d55d479581a65bcc9de88bc1d86bf76c1 and later · before 0ea29bd7d9400d3629683244d609358ed1b12075affected · git
    • 25eb441d55d479581a65bcc9de88bc1d86bf76c1 and later · before c7d474974954d9af7e0092021223d58f2de128dfaffected · git
    • 25eb441d55d479581a65bcc9de88bc1d86bf76c1 and later · before 16f351adf733a182224ad24916d7673aa6df02dfaffected · git
    • 25eb441d55d479581a65bcc9de88bc1d86bf76c1 and later · before 74f21be9990a42dc2357bcf87a13e16c6998b90eaffected · git
    • 25eb441d55d479581a65bcc9de88bc1d86bf76c1 and later · before 223ee2567a55e4f80315c768d2969e6a3b9fb23daffected · git
    • 5.18.18 and later · before 5.19affected · semver
    • 5.19.2 and later · before 5.20affected · semver
    • before 6.0not affected · semver
    • 6.1.120 and later · up to and including 6.1.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.123-16.1.123-1
Debian:13linuxbefore 6.12.3-16.12.3-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-56680Dec 28, 2024 · media: intel/ipu6: do not handle interrupts when device is disabled
    22Monitor
  • ← EarlierCVE-2024-56682Dec 28, 2024 · irqchip/riscv-aplic: Prevent crash when MSI domain is missing
    22Monitor
  • Later →CVE-2024-56684Dec 28, 2024 · mailbox: mtk-cmdq: fix wrong use of sizeof in cmdq_get_clocks()
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux0ea29bd7d9400d3629683244d609358ed1b12075Vendor (CNA)
Linux Linux16f351adf733a182224ad24916d7673aa6df02dfVendor (CNA)
Linux Linux223ee2567a55e4f80315c768d2969e6a3b9fb23dVendor (CNA)
Linux Linux5.19Vendor (CNA)
Linux Linux5.20Vendor (CNA)
Linux Linux74f21be9990a42dc2357bcf87a13e16c6998b90eVendor (CNA)
Linux Linuxc7d474974954d9af7e0092021223d58f2de128dfVendor (CNA)
debian:linux6.1.123-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records