{
  "id": "CVE-2024-45027",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-09-11T16:15:07.570",
  "lastModified": "2024-09-13T16:29:44.213",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: xhci: Check for xhci->interrupters being allocated in xhci_mem_clearup()\n\nIf xhci_mem_init() fails, it calls into xhci_mem_cleanup() to mop\nup the damage. If it fails early enough, before xhci->interrupters\nis allocated but after xhci->max_interrupters has been set, which\nhappens in most (all?) cases, things get uglier, as xhci_mem_cleanup()\nunconditionally derefences xhci->interrupters. With prejudice.\n\nGate the interrupt freeing loop with a check on xhci->interrupters\nbeing non-NULL.\n\nFound while debugging a DMA allocation issue that led the XHCI driver\non this exact path."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: xhci: Comprueba que xhci->interrupters se asignen en xhci_mem_clearup() Si xhci_mem_init() falla, llama a xhci_mem_cleanup() para limpiar el da\u00f1o. Si falla lo suficientemente pronto, antes de que se asigne xhci->interrupters pero despu\u00e9s de que se haya establecido xhci->max_interrupters, lo que sucede en la mayor\u00eda (\u00bftodos?) de los casos, las cosas se ponen peor, ya que xhci_mem_cleanup() desreferencia incondicionalmente a xhci->interrupters. Con prejuicio. Bloquea el bucle de liberaci\u00f3n de interrupciones con una comprobaci\u00f3n de que xhci->interrupters no sea NULL. Se encontr\u00f3 mientras se depuraba un problema de asignaci\u00f3n de DMA que llev\u00f3 al controlador XHCI por este camino exacto."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-459"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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  "references": [
    {
      "url": "https://git.kernel.org/stable/c/770cacc75b0091ece17349195d72133912c1ca7c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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}