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CVE-2026-74585

Estado: RecibidaSin puntuar—

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

thunderbolt: Bound the DROM dual link port number before indexing sw->ports

tb_drom_parse_entry_port() validates the device-supplied header->index against sw->config.max_port_number before indexing sw->ports[], but the sibling field entry->dual_link_port_nr -- a 6-bit value also read from the DROM -- indexes the same array with no such check. A malicious or malformed Thunderbolt device can set dual_link_port_nr beyond the allocated sw->ports[] (max_port_number + 1 entries), producing an out-of-bounds tb_port pointer that is stored and later dereferenced.

Leer descripción completaMostrar menos

Reject a port entry whose dual_link_port_nr exceeds max_port_number, the same bound already applied to header->index.

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-2026-74585",
  "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": "cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6",
              "lessThan": "6c892ed9f4129ae40ef0f92e1bb31aa0b0ddc72c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6",
              "lessThan": "3d3c212b70633332ab71672aa2bc6af257d2ec83",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6",
              "lessThan": "b98e1e28bd95b0fa33164eec1e763d26c7058b39",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6",
              "lessThan": "50f0c8dd8c3390f851cfb97ca13116f9ee6469d1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6",
              "lessThan": "f28066057134aa9294caa597b670daf505ad9dce",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6",
              "lessThan": "40d2ffb74094cf36edbe05855566a4c58b6ce808",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6",
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              "versionType": "git"
            },
            {
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              "version": "cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6",
              "lessThan": "d6764992f17b23d91ff93ce905ab53c2aa7191f0",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/thunderbolt/eeprom.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.17"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.17",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.152",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.104",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.45",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.9",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/thunderbolt/eeprom.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-22T16:16:30.560",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/3d3c212b70633332ab71672aa2bc6af257d2ec83",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/40d2ffb74094cf36edbe05855566a4c58b6ce808",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/50f0c8dd8c3390f851cfb97ca13116f9ee6469d1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6c892ed9f4129ae40ef0f92e1bb31aa0b0ddc72c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b98e1e28bd95b0fa33164eec1e763d26c7058b39",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d6764992f17b23d91ff93ce905ab53c2aa7191f0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f28066057134aa9294caa597b670daf505ad9dce",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f32c3a9a77cfb50934a60b05d5407649af062535",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Bound the DROM dual link port number before indexing sw->ports\n\ntb_drom_parse_entry_port() validates the device-supplied header->index\nagainst sw->config.max_port_number before indexing sw->ports[], but the\nsibling field entry->dual_link_port_nr -- a 6-bit value also read from\nthe DROM -- indexes the same array with no such check. A malicious or\nmalformed Thunderbolt device can set dual_link_port_nr beyond the\nallocated sw->ports[] (max_port_number + 1 entries), producing an\nout-of-bounds tb_port pointer that is stored and later dereferenced.\n\nReject a port entry whose dual_link_port_nr exceeds max_port_number,\nthe same bound already applied to header->index."
    }
  ],
  "lastModified": "2026-08-22T16:16:30.560",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}