fkie_cve-2022-49548
Vulnerability from fkie_nvd
Published
2025-02-26 07:01
Modified
2025-10-01 20:16
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix potential array overflow in bpf_trampoline_get_progs() The cnt value in the 'cnt >= BPF_MAX_TRAMP_PROGS' check does not include BPF_TRAMP_MODIFY_RETURN bpf programs, so the number of the attached BPF_TRAMP_MODIFY_RETURN bpf programs in a trampoline can exceed BPF_MAX_TRAMP_PROGS. When this happens, the assignment '*progs++ = aux->prog' in bpf_trampoline_get_progs() will cause progs array overflow as the progs field in the bpf_tramp_progs struct can only hold at most BPF_MAX_TRAMP_PROGS bpf programs.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/32c4559c61652f24c9fdd5440342196fe37453bcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4f8897bcc20b9ae44758e0572538d741ab66f0dcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7f845de2863334bed4f362e95853f5e7bc323737Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a2aa95b71c9bbec793b5c5fa50f0a80d882b3e8dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e36452d5da6325df7c10cffc60a9e68d21e2606dPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
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    {
      "nodes": [
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix potential array overflow in bpf_trampoline_get_progs()\n\nThe cnt value in the \u0027cnt \u003e= BPF_MAX_TRAMP_PROGS\u0027 check does not\ninclude BPF_TRAMP_MODIFY_RETURN bpf programs, so the number of\nthe attached BPF_TRAMP_MODIFY_RETURN bpf programs in a trampoline\ncan exceed BPF_MAX_TRAMP_PROGS.\n\nWhen this happens, the assignment \u0027*progs++ = aux-\u003eprog\u0027 in\nbpf_trampoline_get_progs() will cause progs array overflow as the\nprogs field in the bpf_tramp_progs struct can only hold at most\nBPF_MAX_TRAMP_PROGS bpf programs."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: Se corrige un posible desbordamiento de matriz en bpf_trampoline_get_progs() El valor cnt en la comprobaci\u00f3n \u0027cnt \u0026gt;= BPF_MAX_TRAMP_PROGS\u0027 no incluye programas bpf BPF_TRAMP_MODIFY_RETURN, por lo que la cantidad de programas bpf BPF_TRAMP_MODIFY_RETURN adjuntos en un trampol\u00edn puede superar a BPF_MAX_TRAMP_PROGS. Cuando esto sucede, la asignaci\u00f3n \u0027*progs++ = aux-\u0026gt;prog\u0027 en bpf_trampoline_get_progs() provocar\u00e1 un desbordamiento de la matriz progs, ya que el campo progs en la estructura bpf_tramp_progs solo puede contener como m\u00e1ximo programas bpf BPF_MAX_TRAMP_PROGS."
    }
  ],
  "id": "CVE-2022-49548",
  "lastModified": "2025-10-01T20:16:41.903",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "impactScore": 5.9,
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          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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  "published": "2025-02-26T07:01:30.683",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-129"
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      "source": "nvd@nist.gov",
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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