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CVE-2026-46188

Estado: AnalizadaMedia (5.5)—

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

octeon_ep_vf: add NULL check for napi_build_skb()

napi_build_skb() can return NULL on allocation failure. In __octep_vf_oq_process_rx(), the result is used directly without a NULL check in both the single-buffer and multi-fragment paths, leading to a NULL pointer dereference.

Add NULL checks after both napi_build_skb() calls, properly advancing descriptors and consuming remaining fragments on failure.

CVSS

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)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-46188",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
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          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
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          "programFiles": [
            "drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_rx.c"
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          "defaultStatus": "affected"
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  ],
  "published": "2026-05-28T10:16:34.440",
  "references": [
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteon_ep_vf: add NULL check for napi_build_skb()\n\nnapi_build_skb() can return NULL on allocation failure. In\n__octep_vf_oq_process_rx(), the result is used directly without a NULL\ncheck in both the single-buffer and multi-fragment paths, leading to a\nNULL pointer dereference.\n\nAdd NULL checks after both napi_build_skb() calls, properly advancing\ndescriptors and consuming remaining fragments on failure."
    }
  ],
  "lastModified": "2026-06-17T10:53:14.613",
  "configurations": [
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          "negate": false,
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}