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CVE-2018-9439

Status: AnalyzedMedium (6.7)—
Technical details traces, logs and code from the original report
In __unregister_prot_hook and packet_release of af_packet.c, there is a
    possible use-after-free due to improper locking. This could lead to local
    escalation of privilege in the kernel with System execution privileges
    needed. User interaction is not needed for exploitation.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2018-9439",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2018-9439",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-12-05T15:31:18.530348Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.7,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
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          "attackVector": "LOCAL",
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          "vendor": "google",
          "product": "pixel",
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  "published": "2024-12-05T00:15:18.337",
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      "url": "https://source.android.com/security/bulletin/pixel/2018-08-01",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@android.com"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-416"
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    {
      "type": "Secondary",
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        {
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          "value": "CWE-416"
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      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In __unregister_prot_hook and packet_release of af_packet.c, there is a\n    possible use-after-free due to improper locking. This could lead to local\n    escalation of privilege in the kernel with System execution privileges\n    needed. User interaction is not needed for exploitation."
    },
    {
      "lang": "es",
      "value": "En __unregister_prot_hook y packet_release de af_packet.c, existe un posible uso después de liberación debido a un bloqueo inadecuado. Esto podría conducir a una escalada local de privilegios en el kernel con privilegios de ejecución de sistema necesarios. No se necesita interacción del usuario para la explotación."
    }
  ],
  "lastModified": "2026-06-17T02:06:40.907",
  "configurations": [
    {
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        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:google:android:-:*:*:*:*:*:*:*",
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  "sourceIdentifier": "security@android.com"
}