fkie_cve-2025-21965
Vulnerability from fkie_nvd
Published
2025-04-01 16:15
Modified
2025-04-01 20:26
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: sched_ext: Validate prev_cpu in scx_bpf_select_cpu_dfl() If a BPF scheduler provides an invalid CPU (outside the nr_cpu_ids range) as prev_cpu to scx_bpf_select_cpu_dfl() it can cause a kernel crash. To prevent this, validate prev_cpu in scx_bpf_select_cpu_dfl() and trigger an scx error if an invalid CPU is specified.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/515680e76c536dd4aa8e2b5d674b0d441baddf5b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/752b56bb76e2471197d25d6948d85753043b10da
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9360dfe4cbd62ff1eb8217b815964931523b75b3
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched_ext: Validate prev_cpu in scx_bpf_select_cpu_dfl()\n\nIf a BPF scheduler provides an invalid CPU (outside the nr_cpu_ids\nrange) as prev_cpu to scx_bpf_select_cpu_dfl() it can cause a kernel\ncrash.\n\nTo prevent this, validate prev_cpu in scx_bpf_select_cpu_dfl() and\ntrigger an scx error if an invalid CPU is specified."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sched_ext: Validar prev_cpu en scx_bpf_select_cpu_dfl(). Si un programador BPF proporciona una CPU no v\u00e1lida (fuera del rango nr_cpu_ids) como prev_cpu a scx_bpf_select_cpu_dfl(), puede provocar un fallo del kernel. Para evitarlo, valide prev_cpu en scx_bpf_select_cpu_dfl() y genere un error scx si se especifica una CPU no v\u00e1lida."
    }
  ],
  "id": "CVE-2025-21965",
  "lastModified": "2025-04-01T20:26:01.990",
  "metrics": {},
  "published": "2025-04-01T16:15:27.767",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/515680e76c536dd4aa8e2b5d674b0d441baddf5b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/752b56bb76e2471197d25d6948d85753043b10da"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9360dfe4cbd62ff1eb8217b815964931523b75b3"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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