{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e"
            },
            {
              "fixed": "f42cd95e679d5b78611cd2208cd1c41ad0045ffa"
            },
            {
              "fixed": "8ec5838a35b03ac0cf3602452a369898051ffaf9"
            },
            {
              "fixed": "b29b70bfa12133423924fcd0327c19a802f7e368"
            },
            {
              "fixed": "37a11129345337efd6eef8e62b03b6348cd0dd8b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.10.0"
            },
            {
              "fixed": "6.12.112"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.55"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98601.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel_pcie: validate device-supplied DMA indices\n\nIn btintel_pcie_msix_rx_handle(), the driver processes RX completion\ndescriptors (urbd1) written by the PCIe device into DMA-coherent memory.\nurbd1-\u003efrbd_tag (a 16-bit field fully controlled by the device firmware\nvia DMA) is used directly as an array index into rxq-\u003ebufs[] without any\nbounds check. rxq-\u003ebufs[] has only BTINTEL_PCIE_RX_DESCS_COUNT (64)\nentries, while frbd_tag can be any value 0-65535. A malicious or\nmalfunctioning device can write an out-of-range frbd_tag, causing the\ndriver to dereference an out-of-bounds data_buf pointer.\n\nAdditionally, cr_hia is read from a DMA-shared index array also writable\nby the device; if the device sets cr_hia \u003e= rxq-\u003ecount, the while-loop\nnever terminates because cr_tia is wrapped via modulo rxq-\u003ecount and can\nnever equal an out-of-range cr_hia.\n\nAdd bounds validation for cr_hia and frbd_tag in the RX path, and cr_hia\nin the TX path. Log invalid values with bt_dev_err before returning.",
  "id": "CVE-2026-98601",
  "modified": "2026-10-20T02:30:32.508183389Z",
  "published": "2026-10-18T15:19:13.760Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/37a11129345337efd6eef8e62b03b6348cd0dd8b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ec5838a35b03ac0cf3602452a369898051ffaf9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b29b70bfa12133423924fcd0327c19a802f7e368"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f42cd95e679d5b78611cd2208cd1c41ad0045ffa"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98601.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98601"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "Bluetooth: btintel_pcie: validate device-supplied DMA indices"
}