fkie_cve-2024-36016
Vulnerability from fkie_nvd
Published
2024-05-29 19:15
Modified
2024-11-21 09:21
Severity ?
7.7 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: tty: n_gsm: fix possible out-of-bounds in gsm0_receive() Assuming the following: - side A configures the n_gsm in basic option mode - side B sends the header of a basic option mode frame with data length 1 - side A switches to advanced option mode - side B sends 2 data bytes which exceeds gsm->len Reason: gsm->len is not used in advanced option mode. - side A switches to basic option mode - side B keeps sending until gsm0_receive() writes past gsm->buf Reason: Neither gsm->state nor gsm->len have been reset after reconfiguration. Fix this by changing gsm->count to gsm->len comparison from equal to less than. Also add upper limit checks against the constant MAX_MRU in gsm0_receive() and gsm1_receive() to harden against memory corruption of gsm->len and gsm->mru. All other checks remain as we still need to limit the data according to the user configuration and actual payload size.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0fb736c9931e02dbc7d9a75044c8e1c039e50f04
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/46f52c89a7e7d2691b97a9728e4591d071ca8abc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/47388e807f85948eefc403a8a5fdc5b406a65d5a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4c267110fc110390704cc065edb9817fdd10ff54
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/774d83b008eccb1c48c14dc5486e7aa255731350
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9513d4148950b05bc99fa7314dc883cc0e1605e5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b229bc6c6ea9fe459fc3fa94fd0a27a2f32aca56
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b890d45aaf02b564e6cae2d2a590f9649330857d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f126ce7305fe88f49cdabc6db4168b9318898ea3
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0fb736c9931e02dbc7d9a75044c8e1c039e50f04
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/46f52c89a7e7d2691b97a9728e4591d071ca8abc
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/47388e807f85948eefc403a8a5fdc5b406a65d5a
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4c267110fc110390704cc065edb9817fdd10ff54
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/774d83b008eccb1c48c14dc5486e7aa255731350
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9513d4148950b05bc99fa7314dc883cc0e1605e5
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b229bc6c6ea9fe459fc3fa94fd0a27a2f32aca56
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b890d45aaf02b564e6cae2d2a590f9649330857d
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f126ce7305fe88f49cdabc6db4168b9318898ea3
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: n_gsm: fix possible out-of-bounds in gsm0_receive()\n\nAssuming the following:\n- side A configures the n_gsm in basic option mode\n- side B sends the header of a basic option mode frame with data length 1\n- side A switches to advanced option mode\n- side B sends 2 data bytes which exceeds gsm-\u003elen\n  Reason: gsm-\u003elen is not used in advanced option mode.\n- side A switches to basic option mode\n- side B keeps sending until gsm0_receive() writes past gsm-\u003ebuf\n  Reason: Neither gsm-\u003estate nor gsm-\u003elen have been reset after\n  reconfiguration.\n\nFix this by changing gsm-\u003ecount to gsm-\u003elen comparison from equal to less\nthan. Also add upper limit checks against the constant MAX_MRU in\ngsm0_receive() and gsm1_receive() to harden against memory corruption of\ngsm-\u003elen and gsm-\u003emru.\n\nAll other checks remain as we still need to limit the data according to the\nuser configuration and actual payload size."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: tty: n_gsm: corrige posibles fuera de los l\u00edmites en gsm0_receive() Suponiendo lo siguiente: - el lado A configura el n_gsm en modo de opci\u00f3n b\u00e1sica - el lado B env\u00eda el encabezado de un mensaje b\u00e1sico trama del modo de opci\u00f3n con longitud de datos 1 - el lado A cambia al modo de opci\u00f3n avanzada - el lado B env\u00eda 2 bytes de datos que exceden gsm-\u0026gt;len Motivo: gsm-\u0026gt;len no se usa en el modo de opci\u00f3n avanzada. - el lado A cambia al modo de opci\u00f3n b\u00e1sica - el lado B contin\u00faa enviando hasta que gsm0_receive() escribe m\u00e1s all\u00e1 de gsm-\u0026gt;buf Motivo: Ni gsm-\u0026gt;state ni gsm-\u0026gt;len se han restablecido despu\u00e9s de la reconfiguraci\u00f3n. Solucione este problema cambiando gsm-\u0026gt;count a gsm-\u0026gt;len comparaci\u00f3n de igual a menor que. Tambi\u00e9n agregue comprobaciones de l\u00edmite superior contra la constante MAX_MRU en gsm0_receive() y gsm1_receive() para proteger contra la corrupci\u00f3n de memoria de gsm-\u0026gt;len y gsm-\u0026gt;mru. Todas las dem\u00e1s comprobaciones permanecen, ya que todav\u00eda necesitamos limitar los datos seg\u00fan la configuraci\u00f3n del usuario y el tama\u00f1o real del payload."
    }
  ],
  "id": "CVE-2024-36016",
  "lastModified": "2024-11-21T09:21:26.503",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.2,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-05-29T19:15:48.297",
  "references": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
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    },
    {
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    },
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    },
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b890d45aaf02b564e6cae2d2a590f9649330857d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f126ce7305fe88f49cdabc6db4168b9318898ea3"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/0fb736c9931e02dbc7d9a75044c8e1c039e50f04"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/46f52c89a7e7d2691b97a9728e4591d071ca8abc"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/47388e807f85948eefc403a8a5fdc5b406a65d5a"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/4c267110fc110390704cc065edb9817fdd10ff54"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/774d83b008eccb1c48c14dc5486e7aa255731350"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/9513d4148950b05bc99fa7314dc883cc0e1605e5"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/b229bc6c6ea9fe459fc3fa94fd0a27a2f32aca56"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/b890d45aaf02b564e6cae2d2a590f9649330857d"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/f126ce7305fe88f49cdabc6db4168b9318898ea3"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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