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CVE-2026-93115

Estado: RecibidaSin puntuar—

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

platform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL

Every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), so platform drivers that rely on the existence of a device's ACPI companion object need to verify its presence.

mlxbf_pmc_probe() passes the result of ACPI_COMPANION() to acpi_device_hid(), which dereferences it, so force-binding the driver to a device without an ACPI companion leads to a NULL pointer dereference.

Accordingly, add a requisite ACPI_COMPANION() check against NULL to the mlxbf-pmc driver and return -ENODEV when the companion is missing.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-93115",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "1a218d312e65ec396b2739056a8ea78493015f21",
              "lessThan": "950d8e8375f3ff4787de51b7bdf8dd23a3ad6547",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1a218d312e65ec396b2739056a8ea78493015f21",
              "lessThan": "fdfb736282b9665c0169df0c4152ec91fdea2767",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1a218d312e65ec396b2739056a8ea78493015f21",
              "lessThan": "bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1a218d312e65ec396b2739056a8ea78493015f21",
              "lessThan": "a75b84119e56fc34b0f1403f3b93d357a55dabb6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1a218d312e65ec396b2739056a8ea78493015f21",
              "lessThan": "71ba8b6e28f7a83b724036f5de07e03bb5473286",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1a218d312e65ec396b2739056a8ea78493015f21",
              "lessThan": "d25dd08268aeaceb485189aaa84aa6d68a460291",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "c38cce70adef874c2a7b5132c14d6c221401deff",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/platform/mellanox/mlxbf-pmc.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.11"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.11",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/platform/mellanox/mlxbf-pmc.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:18:06.073",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/71ba8b6e28f7a83b724036f5de07e03bb5473286",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/950d8e8375f3ff4787de51b7bdf8dd23a3ad6547",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a75b84119e56fc34b0f1403f3b93d357a55dabb6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c38cce70adef874c2a7b5132c14d6c221401deff",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d25dd08268aeaceb485189aaa84aa6d68a460291",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fdfb736282b9665c0169df0c4152ec91fdea2767",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL\n\nEvery platform driver can be forced to match a device that doesn't match\nits list of device IDs because of device_match_driver_override(), so\nplatform drivers that rely on the existence of a device's ACPI companion\nobject need to verify its presence.\n\nmlxbf_pmc_probe() passes the result of ACPI_COMPANION() to\nacpi_device_hid(), which dereferences it, so force-binding the driver to\na device without an ACPI companion leads to a NULL pointer dereference.\n\nAccordingly, add a requisite ACPI_COMPANION() check against NULL to the\nmlxbf-pmc driver and return -ENODEV when the companion is missing."
    }
  ],
  "lastModified": "2026-09-17T17:18:06.073",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}