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CVE-2006-4342

Status: ModifiedMedium (5.5)—

The kernel in Red Hat Enterprise Linux 3, when running on SMP systems, allows local users to cause a denial of service (deadlock) by running the shmat function on an shm at the same time that shmctl is removing that shm (IPC_RMID), which prevents a spinlock from being unlocked.

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)

Redhat — Enterprise Linux

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2006-4342",
  "cveTags": [],
  "metrics": {
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          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:H/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
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          "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",
          "confidentialityImpact": "NONE"
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  "affected": [
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      "affectedData": [
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          "versions": [
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  "published": "2006-10-17T17:07:00.000",
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  ],
  "vulnStatus": "Modified",
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      "description": [
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          "value": "CWE-667"
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      "lang": "en",
      "value": "The kernel in Red Hat Enterprise Linux 3, when running on SMP systems, allows local users to cause a denial of service (deadlock) by running the shmat function on an shm at the same time that shmctl is removing that shm (IPC_RMID), which prevents a spinlock from being unlocked."
    },
    {
      "lang": "es",
      "value": "En núcleo en Red Hat Enterprise Linux 3, al ejecutarse en sistemas SMP, permite a usuarios locales provocar una denegación de servicio (punto muerto) ejecutando la función shmat en un shm al mismo tiempo que shmctl está borrando ese shm (IPC_RMID), lo cual previene a un hilo bloqueado en un bucle (spinlock)  de ser desbloqueado."
    }
  ],
  "lastModified": "2026-06-16T22:28:54.840",
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}