{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98601",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.359Z",
        "datePublished": "2026-10-18T15:19:13.760Z",
        "dateUpdated": "2026-10-19T09:22:28.028Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:22:28.028Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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->frbd_tag (a 16-bit field fully controlled by the device firmware\nvia DMA) is used directly as an array index into rxq->bufs[] without any\nbounds check. rxq->bufs[] 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 >= rxq->count, the while-loop\nnever terminates because cr_tia is wrapped via modulo rxq->count 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."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/bluetooth/btintel_pcie.c"
                    ],
                    "versions": [
                        {
                            "version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e",
                            "lessThan": "f42cd95e679d5b78611cd2208cd1c41ad0045ffa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e",
                            "lessThan": "8ec5838a35b03ac0cf3602452a369898051ffaf9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e",
                            "lessThan": "b29b70bfa12133423924fcd0327c19a802f7e368",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e",
                            "lessThan": "37a11129345337efd6eef8e62b03b6348cd0dd8b",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/bluetooth/btintel_pcie.c"
                    ],
                    "versions": [
                        {
                            "version": "6.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.10",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.112",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.55",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.9",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "6.12.112"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "6.18.55"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "7.2.9"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/f42cd95e679d5b78611cd2208cd1c41ad0045ffa"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8ec5838a35b03ac0cf3602452a369898051ffaf9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b29b70bfa12133423924fcd0327c19a802f7e368"
                },
                {
                    "url": "https://git.kernel.org/stable/c/37a11129345337efd6eef8e62b03b6348cd0dd8b"
                }
            ],
            "title": "Bluetooth: btintel_pcie: validate device-supplied DMA indices",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}