Vulnerability-Lookup

GHSA-VW3V-9427-R3GF

Vulnerability from github – Published: 2024-10-21 18:30 – Updated: 2024-10-25 15:31

Details

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

drm/amd/display: Check null pointers before used

[WHAT & HOW] Poniters, such as dc->clk_mgr, are null checked previously in the same function, so Coverity warns "implies that "dc->clk_mgr" might be null". As a result, these pointers need to be checked when used again.

This fixes 10 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-2024-49921"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T18:15:14Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Check null pointers before used\n\n[WHAT \u0026 HOW]\nPoniters, such as dc-\u003eclk_mgr, are null checked previously in the same\nfunction, so Coverity warns \"implies that \"dc-\u003eclk_mgr\" might be null\".\nAs a result, these pointers need to be checked when used again.\n\nThis fixes 10 FORWARD_NULL issues reported by Coverity.",
  "id": "GHSA-vw3v-9427-r3gf",
  "modified": "2024-10-25T15:31:25Z",
  "published": "2024-10-21T18:30:57Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49921"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5b35bf1a82eb29841b67ff5643ba83762250fc24"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/be1fb44389ca3038ad2430dac4234669bc177ee3"
    }
  ],
  "schema_version": "1.4.0",
  "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-2024-49921 (GCVE-0-2024-49921)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-05-11 20:41

Title

drm/amd/display: Check null pointers before used

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check null pointers before used [WHAT & HOW] Poniters, such as dc->clk_mgr, are null checked previously in the same function, so Coverity warns "implies that "dc->clk_mgr" might be null". As a result, these pointers need to be checked when used again. This fixes 10 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 2024-10-22 13:40 UTC

Assigner

Linux mitre root Scorecard

References

2 references

URL	Tags
https://git.kernel.org/stable/c/5b35bf1a82eb29841…
https://git.kernel.org/stable/c/be1fb44389ca3038a…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < 5b35bf1a82eb29841b67ff5643ba83762250fc24 (git) Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < be1fb44389ca3038ad2430dac4234669bc177ee3 (git)
Linux	Linux	Affected: 4.15 Unaffected: 0 , < 4.15 (semver) Unaffected: 6.11.3 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix)

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JSON

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                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:40:21.671812Z",
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            "drivers/gpu/drm/amd/display/dc/hubp/dcn10/dcn10_hubp.c",
            "drivers/gpu/drm/amd/display/dc/hubp/dcn20/dcn20_hubp.c",
            "drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c",
            "drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c",
            "drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c",
            "drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c",
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            "drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c",
            "drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c"
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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.

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-VW3V-9427-R3GF

CVE-2024-49921 (GCVE-0-2024-49921)

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