{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "dfccd0f580445d176acea174175b3e6518cc91f7"
            },
            {
              "fixed": "c5e05237444f32f6cfe5d907603a232c77a08b31"
            },
            {
              "fixed": "8ddaea033de051ed61b39f6b69ad54a411172b33"
            },
            {
              "fixed": "7535db0624a2dede374c42040808ad9a9101d723"
            },
            {
              "fixed": "7ecd3dd4f8eecd3309432156ccfe24768e009ec4"
            },
            {
              "fixed": "56ad559cf6d87f250a8d203b555dfc3716afa946"
            },
            {
              "fixed": "64513d0e546a1f19e390f7e5eba3872bfcbdacf5"
            },
            {
              "fixed": "febccb39255f9df35527b88c953b2e0deae50e53"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/46xxx/CVE-2024-46676.json"
  },
  "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 \u0026\u0026 !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-\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.",
  "id": "CVE-2024-46676",
  "modified": "2026-04-01T23:09:43.136969330Z",
  "published": "2024-09-13T05:29:11.598Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/56ad559cf6d87f250a8d203b555dfc3716afa946"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64513d0e546a1f19e390f7e5eba3872bfcbdacf5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7535db0624a2dede374c42040808ad9a9101d723"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ecd3dd4f8eecd3309432156ccfe24768e009ec4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ddaea033de051ed61b39f6b69ad54a411172b33"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c5e05237444f32f6cfe5d907603a232c77a08b31"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/febccb39255f9df35527b88c953b2e0deae50e53"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/46xxx/CVE-2024-46676.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46676"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.3",
  "summary": "nfc: pn533: Add poll mod list filling check"
}