fkie_cve-2022-49051
Vulnerability from fkie_nvd
Published
2025-02-26 07:00
Modified
2025-09-23 18:28
Severity ?
6.8 (Medium) - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net: usb: aqc111: Fix out-of-bounds accesses in RX fixup aqc111_rx_fixup() contains several out-of-bounds accesses that can be triggered by a malicious (or defective) USB device, in particular: - The metadata array (desc_offset..desc_offset+2*pkt_count) can be out of bounds, causing OOB reads and (on big-endian systems) OOB endianness flips. - A packet can overlap the metadata array, causing a later OOB endianness flip to corrupt data used by a cloned SKB that has already been handed off into the network stack. - A packet SKB can be constructed whose tail is far beyond its end, causing out-of-bounds heap data to be considered part of the SKB's data. Found doing variant analysis. Tested it with another driver (ax88179_178a), since I don't have a aqc111 device to test it, but the code looks very similar.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/36311fe98f55dea9200c69e2dd6d6ddb8fc94080Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/404998a137bcb8a926f7c949030afbe285472593Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/afb8e246527536848b9b4025b40e613edf776a9dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b416898442f2b6aa9f1b2f2968ce07e3abaa05f7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d90df6da50c56ad8b1a132e3cf86b6cdf8f507b7Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.18


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "59F40C4F-515F-423C-9109-695C6F8EA578",
              "versionEndExcluding": "5.4.190",
              "versionStartIncluding": "5.0",
              "vulnerable": true
            },
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "vulnerable": true
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: aqc111: Fix out-of-bounds accesses in RX fixup\n\naqc111_rx_fixup() contains several out-of-bounds accesses that can be\ntriggered by a malicious (or defective) USB device, in particular:\n\n - The metadata array (desc_offset..desc_offset+2*pkt_count) can be out of bounds,\n   causing OOB reads and (on big-endian systems) OOB endianness flips.\n - A packet can overlap the metadata array, causing a later OOB\n   endianness flip to corrupt data used by a cloned SKB that has already\n   been handed off into the network stack.\n - A packet SKB can be constructed whose tail is far beyond its end,\n   causing out-of-bounds heap data to be considered part of the SKB\u0027s\n   data.\n\nFound doing variant analysis. Tested it with another driver (ax88179_178a), since\nI don\u0027t have a aqc111 device to test it, but the code looks very similar."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: usb: aqc111: Arreglar accesos fuera de los l\u00edmites en RX fixup aqc111_rx_fixup() contiene varios accesos fuera de los l\u00edmites que pueden ser activados por un dispositivo USB malicioso (o defectuoso), en particular: - La matriz de metadatos (desc_offset..desc_offset+2*pkt_count) puede estar fuera de los l\u00edmites, causando lecturas OOB y (en sistemas big-endian) cambios de endianness OOB. - Un paquete puede superponerse a la matriz de metadatos, causando que un cambio de endianness OOB posterior corrompa los datos utilizados por un SKB clonado que ya se ha entregado a la pila de red. - Se puede construir un SKB de paquete cuya cola est\u00e9 mucho m\u00e1s all\u00e1 de su final, causando que los datos del mont\u00f3n fuera de los l\u00edmites se consideren parte de los datos del SKB. Se encontr\u00f3 haciendo an\u00e1lisis de variantes. Lo prob\u00e9 con otro controlador (ax88179_178a), ya que no tengo un dispositivo aqc111 para probarlo, pero el c\u00f3digo parece muy similar."
    }
  ],
  "id": "CVE-2022-49051",
  "lastModified": "2025-09-23T18:28:45.417",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "PHYSICAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 0.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-02-26T07:00:42.363",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/36311fe98f55dea9200c69e2dd6d6ddb8fc94080"
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "tags": [
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d90df6da50c56ad8b1a132e3cf86b6cdf8f507b7"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        },
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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