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CVE-2025-21798

Estado: ModificadaMedia (5.5)—

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

firewire: test: Fix potential null dereference in firewire kunit test

kunit_kzalloc() may return a NULL pointer, dereferencing it without NULL check may lead to NULL dereference. Add a NULL check for test_state.

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-2025-21798",
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  "metrics": {
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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            {
              "automatable": "no"
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            {
              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2025-10-01T19:28:45.431282Z"
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      "affectedData": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
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          "programFiles": [
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          "programFiles": [
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  ],
  "published": "2025-02-27T20:16:02.477",
  "references": [
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      "url": "https://git.kernel.org/stable/c/352fafe97784e81a10a7c74bd508f71a19b53c2a",
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  "vulnStatus": "Modified",
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      "description": [
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          "value": "CWE-476"
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    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirewire: test: Fix potential null dereference in firewire kunit test\n\nkunit_kzalloc() may return a NULL pointer, dereferencing it without\nNULL check may lead to NULL dereference.\nAdd a NULL check for test_state."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: firewire: test: Se corrige una posible desreferencia nula en la prueba kunit de firewire kunit_kzalloc() puede devolver un puntero NULL, desreferenciarlo sin la comprobación NULL puede provocar una desreferencia NULL. Se añade una comprobación NULL para test_state."
    }
  ],
  "lastModified": "2026-06-17T08:44:18.457",
  "configurations": [
    {
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}