fkie_cve-2024-45009
Vulnerability from fkie_nvd
Published
2024-09-11 16:15
Modified
2025-11-03 23:15
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: only decrement add_addr_accepted for MPJ req Adding the following warning ... WARN_ON_ONCE(msk->pm.add_addr_accepted == 0) ... before decrementing the add_addr_accepted counter helped to find a bug when running the "remove single subflow" subtest from the mptcp_join.sh selftest. Removing a 'subflow' endpoint will first trigger a RM_ADDR, then the subflow closure. Before this patch, and upon the reception of the RM_ADDR, the other peer will then try to decrement this add_addr_accepted. That's not correct because the attached subflows have not been created upon the reception of an ADD_ADDR. A way to solve that is to decrement the counter only if the attached subflow was an MP_JOIN to a remote id that was not 0, and initiated by the host receiving the RM_ADDR.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1c1f721375989579e46741f59523e39ec9b2a9bdPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2060f1efab370b496c4903b840844ecaff324c3cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/35b31f5549ede4070566b949781e83495906b43dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/85b866e4c4e63a1d7afb58f1e24273caad03d0b7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d20bf2c96d7ffd171299b32f562f70e5bf5dc608Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.11
linux linux_kernel 6.11
linux linux_kernel 6.11
linux linux_kernel 6.11


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: only decrement add_addr_accepted for MPJ req\n\nAdding the following warning ...\n\n  WARN_ON_ONCE(msk-\u003epm.add_addr_accepted == 0)\n\n... before decrementing the add_addr_accepted counter helped to find a\nbug when running the \"remove single subflow\" subtest from the\nmptcp_join.sh selftest.\n\nRemoving a \u0027subflow\u0027 endpoint will first trigger a RM_ADDR, then the\nsubflow closure. Before this patch, and upon the reception of the\nRM_ADDR, the other peer will then try to decrement this\nadd_addr_accepted. That\u0027s not correct because the attached subflows have\nnot been created upon the reception of an ADD_ADDR.\n\nA way to solve that is to decrement the counter only if the attached\nsubflow was an MP_JOIN to a remote id that was not 0, and initiated by\nthe host receiving the RM_ADDR."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mptcp: pm: solo decrementar add_addr_accepted para solicitud MPJ Agregar la siguiente advertencia ... WARN_ON_ONCE(msk-\u0026gt;pm.add_addr_accepted == 0) ... antes de decrementar el contador add_addr_accepted ayud\u00f3 a encontrar un error al ejecutar la subprueba \"eliminar un solo subflujo\" de la autoprueba mptcp_join.sh. Eliminar un endpoint de \u0027subflujo\u0027 primero activar\u00e1 un RM_ADDR, luego el cierre del subflujo. Antes de este parche, y tras la recepci\u00f3n del RM_ADDR, el otro par intentar\u00e1 decrementar este add_addr_accepted. Eso no es correcto porque los subflujos adjuntos no se han creado tras la recepci\u00f3n de un ADD_ADDR. Una forma de resolver esto es disminuir el contador solo si el subflujo adjunto fue un MP_JOIN a una identificaci\u00f3n remota que no era 0, e iniciado por el host que recibi\u00f3 el RM_ADDR."
    }
  ],
  "id": "CVE-2024-45009",
  "lastModified": "2025-11-03T23:15:49.240",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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  "published": "2024-09-11T16:15:06.427",
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  "vulnStatus": "Modified",
  "weaknesses": [
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          "value": "NVD-CWE-noinfo"
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      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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