fkie_cve-2024-46676
Vulnerability from fkie_nvd
Published
2024-09-13 06:15
Modified
2024-09-23 14:42
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: nfc: pn533: Add poll mod list filling check In case of im_protocols value is 1 and tm_protocols value is 0 this combination successfully passes the check 'if (!im_protocols && !tm_protocols)' in the nfc_start_poll(). But then after pn533_poll_create_mod_list() call in pn533_start_poll() poll mod list will remain empty and dev->poll_mod_count will remain 0 which lead to division by zero. Normally no im protocol has value 1 in the mask, so this combination is not expected by driver. But these protocol values actually come from userspace via Netlink interface (NFC_CMD_START_POLL operation). So a broken or malicious program may pass a message containing a "bad" combination of protocol parameter values so that dev->poll_mod_count is not incremented inside pn533_poll_create_mod_list(), thus leading to division by zero. Call trace looks like: nfc_genl_start_poll() nfc_start_poll() ->start_poll() pn533_start_poll() Add poll mod list filling check. Found by Linux Verification Center (linuxtesting.org) with SVACE.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/56ad559cf6d87f250a8d203b555dfc3716afa946Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/64513d0e546a1f19e390f7e5eba3872bfcbdacf5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7535db0624a2dede374c42040808ad9a9101d723Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7ecd3dd4f8eecd3309432156ccfe24768e009ec4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8ddaea033de051ed61b39f6b69ad54a411172b33Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c5e05237444f32f6cfe5d907603a232c77a08b31Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/febccb39255f9df35527b88c953b2e0deae50e53Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
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
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\nnfc: pn533: Add poll mod list filling check\n\nIn case of im_protocols value is 1 and tm_protocols value is 0 this\ncombination successfully passes the check\n\u0027if (!im_protocols \u0026\u0026 !tm_protocols)\u0027 in the nfc_start_poll().\nBut then after pn533_poll_create_mod_list() call in pn533_start_poll()\npoll mod list will remain empty and dev-\u003epoll_mod_count will remain 0\nwhich lead to division by zero.\n\nNormally no im protocol has value 1 in the mask, so this combination is\nnot expected by driver. But these protocol values actually come from\nuserspace via Netlink interface (NFC_CMD_START_POLL operation). So a\nbroken or malicious program may pass a message containing a \"bad\"\ncombination of protocol parameter values so that dev-\u003epoll_mod_count\nis not incremented inside pn533_poll_create_mod_list(), thus leading\nto division by zero.\nCall trace looks like:\nnfc_genl_start_poll()\n  nfc_start_poll()\n    -\u003estart_poll()\n    pn533_start_poll()\n\nAdd poll mod list filling check.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nfc: pn533: A\u00f1adir comprobaci\u00f3n de llenado de lista de mod de sondeo En caso de que el valor de im_protocols sea 1 y el valor de tm_protocols sea 0, esta combinaci\u00f3n pasa con \u00e9xito la comprobaci\u00f3n \u0027if (!im_protocols \u0026amp;\u0026amp; !tm_protocols)\u0027 en nfc_start_poll(). Pero luego, despu\u00e9s de la llamada a pn533_poll_create_mod_list() en pn533_start_poll(), la lista de mod de sondeo permanecer\u00e1 vac\u00eda y dev-\u0026gt;poll_mod_count permanecer\u00e1 en 0, lo que conduce a la divisi\u00f3n por cero. Normalmente, ning\u00fan protocolo im tiene el valor 1 en la m\u00e1scara, por lo que el controlador no espera esta combinaci\u00f3n. Pero estos valores de protocolo en realidad provienen del espacio de usuario a trav\u00e9s de la interfaz Netlink (operaci\u00f3n NFC_CMD_START_POLL). Por lo tanto, un programa da\u00f1ado o malicioso puede enviar un mensaje que contenga una combinaci\u00f3n \"mala\" de valores de par\u00e1metros de protocolo, de modo que dev-\u0026gt;poll_mod_count no se incremente dentro de pn533_poll_create_mod_list(), lo que lleva a una divisi\u00f3n por cero. El seguimiento de la llamada se ve as\u00ed: nfc_genl_start_poll() nfc_start_poll() -\u0026gt;start_poll() pn533_start_poll() Agregar comprobaci\u00f3n de llenado de la lista de mods de sondeo. Encontrado por Linux Verification Center (linuxtesting.org) con SVACE."
    }
  ],
  "id": "CVE-2024-46676",
  "lastModified": "2024-09-23T14:42:38.230",
  "metrics": {
    "cvssMetricV31": [
      {
        "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"
      }
    ]
  },
  "published": "2024-09-13T06:15:12.223",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-369"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
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}


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