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CVE-2022-49798

Estado: AnalizadaMedia (4.7)—

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

tracing: Fix race where eprobes can be called before the event

The flag that tells the event to call its triggers after reading the event is set for eprobes after the eprobe is enabled. This leads to a race where the eprobe may be triggered at the beginning of the event where the record information is NULL. The eprobe then dereferences the NULL record causing a NULL kernel pointer bug.

Test for a NULL record to keep this from happening.

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-2022-49798",
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          "version": "3.1",
          "baseScore": 4.7,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1
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          "vendor": "Linux",
          "product": "Linux",
          "versions": [
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          "programFiles": [
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  "published": "2025-05-01T15:16:03.097",
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      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        }
      ]
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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix race where eprobes can be called before the event\n\nThe flag that tells the event to call its triggers after reading the event\nis set for eprobes after the eprobe is enabled. This leads to a race where\nthe eprobe may be triggered at the beginning of the event where the record\ninformation is NULL. The eprobe then dereferences the NULL record causing\na NULL kernel pointer bug.\n\nTest for a NULL record to keep this from happening."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rastreo: Se corrige la ejecución donde se pueden llamar los eprobes antes del evento. El indicador que indica al evento que llame a sus desencadenadores después de leer el evento se establece para los eprobes después de habilitarlos. Esto provoca una ejecución donde el eprobe puede activarse al inicio del evento cuando la información del registro es nula. El eprobe entonces desreferencia el registro nulo, causando un error de puntero de kernel nulo. Pruebe si hay un registro nulo para evitar que esto suceda."
    }
  ],
  "lastModified": "2026-06-17T05:19:10.367",
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