{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64407",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T15:36:31.786Z",
        "datePublished": "2026-07-25T08:50:48.912Z",
        "dateUpdated": "2026-08-17T04:55:05.687Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T04:55:05.687Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btnxpuart: Fix out-of-bounds firmware read in nxp_recv_fw_req_v3()\n\nDuring the v3 firmware download the controller sends a v3_data_req with a\n32 bit offset and a 16 bit len. nxp_recv_fw_req_v3() checks only the lower\nbound of the offset and then sends firmware from that offset.\n\n  nxpdev->fw_dnld_v3_offset = offset - nxpdev->fw_v3_offset_correction;\n  serdev_device_write_buf(nxpdev->serdev, nxpdev->fw->data +\n                          nxpdev->fw_dnld_v3_offset, len);\n\nNothing checks that fw_dnld_v3_offset + len stays within nxpdev->fw->size,\nso a controller that asks for an offset or length past the firmware image\nmakes the driver read past the end of nxpdev->fw->data and send that\nmemory back over UART.\n\nnxp_recv_fw_req_v1() already bounds the same write. Add the equivalent\ncheck to the v3 path, reject the request when it falls outside the firmware\nimage, and zero len on the error path so the fw_v3_prev_sent bookkeeping at\nfree_skb stays consistent."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/bluetooth/btnxpuart.c"
                    ],
                    "versions": [
                        {
                            "version": "689ca16e523278470c38832a3010645a78c544d8",
                            "lessThan": "21e60eb4d95854196e7c0e77383f35e7ac95df61",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "689ca16e523278470c38832a3010645a78c544d8",
                            "lessThan": "441088792ffec3ca01f4efe2934060570eb11eb8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "689ca16e523278470c38832a3010645a78c544d8",
                            "lessThan": "2a68a773089204af1c8581dc79668b775418c5ee",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "689ca16e523278470c38832a3010645a78c544d8",
                            "lessThan": "49bcb39e3a041ce26021f77971eaccb49a275118",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "689ca16e523278470c38832a3010645a78c544d8",
                            "lessThan": "badff6c3bed8923a1257a853f137d447976eec30",
                            "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/btnxpuart.c"
                    ],
                    "versions": [
                        {
                            "version": "6.4",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.4",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.96",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.39",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.4",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "6.4",
                                    "versionEndExcluding": "6.6.145"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.4",
                                    "versionEndExcluding": "6.12.96"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.4",
                                    "versionEndExcluding": "6.18.39"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.4",
                                    "versionEndExcluding": "7.1.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.4",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/21e60eb4d95854196e7c0e77383f35e7ac95df61"
                },
                {
                    "url": "https://git.kernel.org/stable/c/441088792ffec3ca01f4efe2934060570eb11eb8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2a68a773089204af1c8581dc79668b775418c5ee"
                },
                {
                    "url": "https://git.kernel.org/stable/c/49bcb39e3a041ce26021f77971eaccb49a275118"
                },
                {
                    "url": "https://git.kernel.org/stable/c/badff6c3bed8923a1257a853f137d447976eec30"
                }
            ],
            "title": "Bluetooth: btnxpuart: Fix out-of-bounds firmware read in nxp_recv_fw_req_v3()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}