{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-46676",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-46676"
  ],
  "published": "2024-09-13T05:30:51Z",
  "summary": "nfc: pn533: Add poll mod list filling check",
  "details": "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'if (!im_protocols && !tm_protocols)' 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->poll_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->poll_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    ->start_poll()\n    pn533_start_poll()\n\nAdd poll mod list filling check.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.108",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-46676"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c5e05237444f32f6cfe5d907603a232c77a08b31"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8ddaea033de051ed61b39f6b69ad54a411172b33"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7535db0624a2dede374c42040808ad9a9101d723"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7ecd3dd4f8eecd3309432156ccfe24768e009ec4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/56ad559cf6d87f250a8d203b555dfc3716afa946"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/64513d0e546a1f19e390f7e5eba3872bfcbdacf5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/febccb39255f9df35527b88c953b2e0deae50e53"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}