FKIE_CVE-2025-68205

Vulnerability from fkie_nvd - Published: 2025-12-16 14:15 - Updated: 2026-10-14 13:10
Severity
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/82420bd4e17bdaba8453fbf9e10c58c9ed0c9727
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d2aed6fac1148528181affb781aa683d6569042b
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/hda/codecs/hdmi/nvhdmi-mcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d2aed6fac1148528181affb781aa683d6569042b",
              "status": "affected",
              "version": "ad781b550f9a8829e3dae4bd3d18c4a126a53d04",
              "versionType": "git"
            },
            {
              "lessThan": "82420bd4e17bdaba8453fbf9e10c58c9ed0c9727",
              "status": "affected",
              "version": "ad781b550f9a8829e3dae4bd3d18c4a126a53d04",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "sound/hda/codecs/hdmi/nvhdmi-mcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nALSA: hda/hdmi: Corrige la rotura al sondear el controlador nvhdmi-mcp\n\nDespu\u00e9s de reestructurar y dividir el c\u00f3digo del controlador del c\u00f3dec HDMI, cada controlador del c\u00f3dec HDMI contiene sus propias operaciones build_controls y build_pcms. Un error de copiar y pegar coloc\u00f3 las entradas incorrectas para el controlador nvhdmi-mcp; tanto build_controls como build_pcms est\u00e1n intercambiadas. Desafortunadamente, ambas devoluciones de llamada tienen la misma forma, y el compilador tampoco se quej\u00f3. Esto result\u00f3 en una desreferencia NULL porque la instancia de PCM no hab\u00eda sido inicializada al llamar a la devoluci\u00f3n de llamada build_controls.\n\nCorr\u00edgelo pasando las entradas adecuadas."
    }
  ],
  "id": "CVE-2025-68205",
  "lastModified": "2026-10-14T13:10:00.187",
  "metrics": {},
  "published": "2025-12-16T14:15:53.377",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/82420bd4e17bdaba8453fbf9e10c58c9ed0c9727"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d2aed6fac1148528181affb781aa683d6569042b"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



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