{"api_version":"1","generated_at":"2026-07-26T00:28:19+00:00","cve":"CVE-2026-64407","urls":{"html":"https://cve.report/CVE-2026-64407","api":"https://cve.report/api/cve/CVE-2026-64407.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64407","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64407"},"summary":{"title":"Bluetooth: btnxpuart: Fix out-of-bounds firmware read in nxp_recv_fw_req_v3()","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:24","updated_at":"2026-07-25 10:17:24"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/2a68a773089204af1c8581dc79668b775418c5ee","name":"https://git.kernel.org/stable/c/2a68a773089204af1c8581dc79668b775418c5ee","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/badff6c3bed8923a1257a853f137d447976eec30","name":"https://git.kernel.org/stable/c/badff6c3bed8923a1257a853f137d447976eec30","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/49bcb39e3a041ce26021f77971eaccb49a275118","name":"https://git.kernel.org/stable/c/49bcb39e3a041ce26021f77971eaccb49a275118","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/441088792ffec3ca01f4efe2934060570eb11eb8","name":"https://git.kernel.org/stable/c/441088792ffec3ca01f4efe2934060570eb11eb8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/21e60eb4d95854196e7c0e77383f35e7ac95df61","name":"https://git.kernel.org/stable/c/21e60eb4d95854196e7c0e77383f35e7ac95df61","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64407","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64407","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 689ca16e523278470c38832a3010645a78c544d8 21e60eb4d95854196e7c0e77383f35e7ac95df61 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 689ca16e523278470c38832a3010645a78c544d8 441088792ffec3ca01f4efe2934060570eb11eb8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 689ca16e523278470c38832a3010645a78c544d8 2a68a773089204af1c8581dc79668b775418c5ee git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 689ca16e523278470c38832a3010645a78c544d8 49bcb39e3a041ce26021f77971eaccb49a275118 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 689ca16e523278470c38832a3010645a78c544d8 badff6c3bed8923a1257a853f137d447976eec30 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.4","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.4 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.96 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.39 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.4 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64407","cve":"CVE-2026-64407","epss":"0.002090000","percentile":"0.111640000","score_date":"2026-07-25","updated_at":"2026-07-26 00:12:33"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/bluetooth/btnxpuart.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"21e60eb4d95854196e7c0e77383f35e7ac95df61","status":"affected","version":"689ca16e523278470c38832a3010645a78c544d8","versionType":"git"},{"lessThan":"441088792ffec3ca01f4efe2934060570eb11eb8","status":"affected","version":"689ca16e523278470c38832a3010645a78c544d8","versionType":"git"},{"lessThan":"2a68a773089204af1c8581dc79668b775418c5ee","status":"affected","version":"689ca16e523278470c38832a3010645a78c544d8","versionType":"git"},{"lessThan":"49bcb39e3a041ce26021f77971eaccb49a275118","status":"affected","version":"689ca16e523278470c38832a3010645a78c544d8","versionType":"git"},{"lessThan":"badff6c3bed8923a1257a853f137d447976eec30","status":"affected","version":"689ca16e523278470c38832a3010645a78c544d8","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/bluetooth/btnxpuart.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.4"},{"lessThan":"6.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.96","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.96","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.39","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.4","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc3","versionStartIncluding":"6.4","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-07-25T08:50:48.912Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64407","datePublished":"2026-07-25T08:50:48.912Z","dateReserved":"2026-07-19T15:36:31.786Z","dateUpdated":"2026-07-25T08:50:48.912Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:24","lastModifiedDate":"2026-07-25 10:17:24","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64407","Ordinal":"1","Title":"Bluetooth: btnxpuart: Fix out-of-bounds firmware read in nxp_rec","CVE":"CVE-2026-64407","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64407","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Bluetooth: btnxpuart: Fix out-of-bounds firmware read in nxp_rec"}]}}}