{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "c366be720235301fdadf67e6f1ea6ff32669c074"
            },
            {
              "fixed": "071e43fcba5ddd9a7813e6cc0aa10299eae41b21"
            },
            {
              "fixed": "57f312b955938fc4663f430cb57a71f2414f601b"
            }
          ],
          "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/2025/39xxx/CVE-2025-39680.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: rtl9300: Fix out-of-bounds bug in rtl9300_i2c_smbus_xfer\n\nThe data-\u003eblock[0] variable comes from user. Without proper check,\nthe variable may be very large to cause an out-of-bounds bug.\n\nFix this bug by checking the value of data-\u003eblock[0] first.\n\n1. commit 39244cc75482 (\"i2c: ismt: Fix an out-of-bounds bug in\n   ismt_access()\")\n2. commit 92fbb6d1296f (\"i2c: xgene-slimpro: Fix out-of-bounds bug in\n   xgene_slimpro_i2c_xfer()\")",
  "id": "CVE-2025-39680",
  "modified": "2026-04-01T23:09:11.223106326Z",
  "published": "2025-09-05T17:20:46.456Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/071e43fcba5ddd9a7813e6cc0aa10299eae41b21"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/57f312b955938fc4663f430cb57a71f2414f601b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39680.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39680"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.3",
  "summary": "i2c: rtl9300: Fix out-of-bounds bug in rtl9300_i2c_smbus_xfer"
}