fkie_cve-2022-48757
Vulnerability from fkie_nvd
Published
2024-06-20 12:15
Modified
2025-09-17 17:13
Severity ?
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net: fix information leakage in /proc/net/ptype In one net namespace, after creating a packet socket without binding it to a device, users in other net namespaces can observe the new `packet_type` added by this packet socket by reading `/proc/net/ptype` file. This is minor information leakage as packet socket is namespace aware. Add a net pointer in `packet_type` to keep the net namespace of of corresponding packet socket. In `ptype_seq_show`, this net pointer must be checked when it is not NULL.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/47934e06b65637c88a762d9c98329ae6e3238888Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/839ec7039513a4f84bfbaff953a9393471176beePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8f88c78d24f6f346919007cd459fd7e51a8c7779Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b67ad6170c0ea87391bb253f35d1f78857736e54Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/be1ca30331c7923c6f376610c1bd6059be9b1908Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c38023032a598ec6263e008d62c7f02def72d5c7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/db044d97460ea792110eb8b971e82569ded536c6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e372ecd455b6ebc7720f52bf4b5f5d44d02f2092Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e43669c77cb3a742b7d84ecdc7c68c4167a7709bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/47934e06b65637c88a762d9c98329ae6e3238888Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/839ec7039513a4f84bfbaff953a9393471176beePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8f88c78d24f6f346919007cd459fd7e51a8c7779Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b67ad6170c0ea87391bb253f35d1f78857736e54Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/be1ca30331c7923c6f376610c1bd6059be9b1908Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c38023032a598ec6263e008d62c7f02def72d5c7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/db044d97460ea792110eb8b971e82569ded536c6Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e372ecd455b6ebc7720f52bf4b5f5d44d02f2092Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e43669c77cb3a742b7d84ecdc7c68c4167a7709bPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.17


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B484AD73-0FB6-4361-A7D3-D60042DFDC88",
              "versionEndExcluding": "4.4.302",
              "versionStartIncluding": "2.6.26",
              "vulnerable": true
            },
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "5.16.5",
              "versionStartIncluding": "5.16",
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              "vulnerable": true
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          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix information leakage in /proc/net/ptype\n\nIn one net namespace, after creating a packet socket without binding\nit to a device, users in other net namespaces can observe the new\n`packet_type` added by this packet socket by reading `/proc/net/ptype`\nfile. This is minor information leakage as packet socket is\nnamespace aware.\n\nAdd a net pointer in `packet_type` to keep the net namespace of\nof corresponding packet socket. In `ptype_seq_show`, this net pointer\nmust be checked when it is not NULL."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: corrige la fuga de informaci\u00f3n en /proc/net/ptype en un espacio de nombres de red, despu\u00e9s de crear un socket de paquetes sin vincularlo a un dispositivo, los usuarios de otros espacios de nombres de red pueden observar la nueva `packet_type` agregado por este socket de paquete leyendo el archivo `/proc/net/ptype`. Esta es una fuga de informaci\u00f3n menor ya que el socket del paquete reconoce el espacio de nombres. Agregue un puntero de red en `packet_type` para mantener el espacio de nombres de red del socket de paquete correspondiente. En `ptype_seq_show`, este puntero de red debe verificarse cuando no sea NULL."
    }
  ],
  "id": "CVE-2022-48757",
  "lastModified": "2025-09-17T17:13:53.583",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-06-20T12:15:13.823",
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    {
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-668"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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