Vulnerability-Lookup

GHSA-Q56F-P5H4-MJCF

Vulnerability from github – Published: 2024-10-21 12:30 – Updated: 2026-05-12 12:32

Details

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Check link_res->hpo_dp_link_enc before using it

[WHAT & HOW] Functions dp_enable_link_phy and dp_disable_link_phy can pass link_res without initializing hpo_dp_link_enc and it is necessary to check for null before dereferencing.

This fixes 2 FORWARD_NULL issues reported by Coverity.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2024-47704"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T12:15:06Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Check link_res-\u003ehpo_dp_link_enc before using it\n\n[WHAT \u0026 HOW]\nFunctions dp_enable_link_phy and dp_disable_link_phy can pass link_res\nwithout initializing hpo_dp_link_enc and it is necessary to check for\nnull before dereferencing.\n\nThis fixes 2 FORWARD_NULL issues reported by Coverity.",
  "id": "GHSA-q56f-p5h4-mjcf",
  "modified": "2026-05-12T12:32:10Z",
  "published": "2024-10-21T12:30:55Z",
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47704"
    },
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    },
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      "url": "https://git.kernel.org/stable/c/0508a4e95ac1aefd851ceb97ea050d8abb93262c"
    },
    {
      "type": "WEB",
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    },
    {
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    },
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      "url": "https://git.kernel.org/stable/c/be2ca7a2c1561390d28bf2f92654d819659ba510"
    },
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      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
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  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-47704 (GCVE-0-2024-47704)

Vulnerability from cvelistv5 – Published: 2024-10-21 11:53 – Updated: 2026-05-12 11:58

Title

drm/amd/display: Check link_res->hpo_dp_link_enc before using it

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check link_res->hpo_dp_link_enc before using it [WHAT & HOW] Functions dp_enable_link_phy and dp_disable_link_phy can pass link_res without initializing hpo_dp_link_enc and it is necessary to check for null before dereferencing. This fixes 2 FORWARD_NULL issues reported by Coverity.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-10-21 13:04 UTC

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/8c22a62288194f072…
https://git.kernel.org/stable/c/be2ca7a2c1561390d…
https://git.kernel.org/stable/c/530e29452b955c30c…
https://git.kernel.org/stable/c/0508a4e95ac1aefd8…
https://git.kernel.org/stable/c/0beca868cde874224…
https://lists.debian.org/debian-lts-announce/2025…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

3 products

Vendor	Product	Version
Linux	Linux	Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < 8c22a62288194f072eb3a51045b700fce1c18d9e (git) Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < be2ca7a2c1561390d28bf2f92654d819659ba510 (git) Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < 530e29452b955c30cf2102fa4d07420dc6e0c953 (git) Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < 0508a4e95ac1aefd851ceb97ea050d8abb93262c (git) Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < 0beca868cde8742240cd0038141c30482d2b7eb8 (git)
Linux	Linux	Affected: 4.15 Unaffected: 0 , < 4.15 (semver) Unaffected: 6.1.151 , ≤ 6.1.* (semver) Unaffected: 6.6.55 , ≤ 6.6.* (semver) Unaffected: 6.10.14 , ≤ 6.10.* (semver) Unaffected: 6.11.2 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix)
Siemens	SIMATIC CN 4100	Affected: 0 , < V5.0 (custom)

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-Q56F-P5H4-MJCF

CVE-2024-47704 (GCVE-0-2024-47704)

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