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GHSA-FP57-XR9H-HFC8

Vulnerability from github – Published: 2025-12-16 15:30 – Updated: 2025-12-16 15:30

Details

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

ALSA: hda/hdmi: Fix breakage at probing nvhdmi-mcp driver

After restructuring and splitting the HDMI codec driver code, each HDMI codec driver contains the own build_controls and build_pcms ops. A copy-n-paste error put the wrong entries for nvhdmi-mcp driver; both build_controls and build_pcms are swapped. Unfortunately both callbacks have the very same form, and the compiler didn't complain it, either. This resulted in a NULL dereference because the PCM instance hasn't been initialized at calling the build_controls callback.

Fix it by passing the proper entries.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68205"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-16T14:15:53Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: hda/hdmi: Fix breakage at probing nvhdmi-mcp driver\n\nAfter restructuring and splitting the HDMI codec driver code, each\nHDMI codec driver contains the own build_controls and build_pcms ops.\nA copy-n-paste error put the wrong entries for nvhdmi-mcp driver; both\nbuild_controls and build_pcms are swapped.  Unfortunately both\ncallbacks have the very same form, and the compiler didn\u0027t complain\nit, either.  This resulted in a NULL dereference because the PCM\ninstance hasn\u0027t been initialized at calling the build_controls\ncallback.\n\nFix it by passing the proper entries.",
  "id": "GHSA-fp57-xr9h-hfc8",
  "modified": "2025-12-16T15:30:45Z",
  "published": "2025-12-16T15:30:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68205"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82420bd4e17bdaba8453fbf9e10c58c9ed0c9727"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d2aed6fac1148528181affb781aa683d6569042b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-68205 (GCVE-0-2025-68205)

Vulnerability from cvelistv5 – Published: 2025-12-16 13:48 – Updated: 2026-05-11 21:48

Title

ALSA: hda/hdmi: Fix breakage at probing nvhdmi-mcp driver

Summary

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda/hdmi: Fix breakage at probing nvhdmi-mcp driver After restructuring and splitting the HDMI codec driver code, each HDMI codec driver contains the own build_controls and build_pcms ops. A copy-n-paste error put the wrong entries for nvhdmi-mcp driver; both build_controls and build_pcms are swapped. Unfortunately both callbacks have the very same form, and the compiler didn't complain it, either. This resulted in a NULL dereference because the PCM instance hasn't been initialized at calling the build_controls callback. Fix it by passing the proper entries.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/d2aed6fac11485281…
https://git.kernel.org/stable/c/82420bd4e17bdaba8…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ad781b550f9a8829e3dae4bd3d18c4a126a53d04 , < d2aed6fac1148528181affb781aa683d6569042b (git) Affected: ad781b550f9a8829e3dae4bd3d18c4a126a53d04 , < 82420bd4e17bdaba8453fbf9e10c58c9ed0c9727 (git)
Linux	Linux	Affected: 6.17 Unaffected: 0 , < 6.17 (semver) Unaffected: 6.17.9 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix)

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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "sound/hda/codecs/hdmi/nvhdmi-mcp.c"
          ],
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          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d2aed6fac1148528181affb781aa683d6569042b",
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            },
            {
              "lessThan": "82420bd4e17bdaba8453fbf9e10c58c9ed0c9727",
              "status": "affected",
              "version": "ad781b550f9a8829e3dae4bd3d18c4a126a53d04",
              "versionType": "git"
            }
          ]
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          "vendor": "Linux",
          "versions": [
            {
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              "version": "6.17"
            },
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              "status": "unaffected",
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              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.17.*",
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              "versionType": "semver"
            },
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              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: hda/hdmi: Fix breakage at probing nvhdmi-mcp driver\n\nAfter restructuring and splitting the HDMI codec driver code, each\nHDMI codec driver contains the own build_controls and build_pcms ops.\nA copy-n-paste error put the wrong entries for nvhdmi-mcp driver; both\nbuild_controls and build_pcms are swapped.  Unfortunately both\ncallbacks have the very same form, and the compiler didn\u0027t complain\nit, either.  This resulted in a NULL dereference because the PCM\ninstance hasn\u0027t been initialized at calling the build_controls\ncallback.\n\nFix it by passing the proper entries."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:48:44.906Z",
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    "datePublished": "2025-12-16T13:48:32.888Z",
    "dateReserved": "2025-12-16T13:41:40.255Z",
    "dateUpdated": "2026-05-11T21:48:44.906Z",
    "state": "PUBLISHED"
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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