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CVE-2025-39872

Estado: ModificadaMedia (5.5)—

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

hsr: hold rcu and dev lock for hsr_get_port_ndev

hsr_get_port_ndev calls hsr_for_each_port, which need to hold rcu lock. On the other hand, before return the port device, we need to hold the device reference to avoid UaF in the caller function.

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)

Mostrar
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
        "exploitabilityScore": 1.8
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  "affected": [
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      "affectedData": [
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          "product": "Linux",
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          "programFiles": [
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            "net/hsr/hsr_device.c"
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          "versions": [
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              "version": "6.14"
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          "programFiles": [
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  "published": "2025-09-23T06:15:46.533",
  "references": [
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      "url": "https://git.kernel.org/stable/c/68a6729afd3e8e9a2a32538642ce92b96ccf9b1d",
      "tags": [
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  "vulnStatus": "Modified",
  "weaknesses": [
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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhsr: hold rcu and dev lock for hsr_get_port_ndev\n\nhsr_get_port_ndev calls hsr_for_each_port, which need to hold rcu lock.\nOn the other hand, before return the port device, we need to hold the\ndevice reference to avoid UaF in the caller function."
    }
  ],
  "lastModified": "2026-07-30T06:23:53.157",
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