{"api_version":"1","generated_at":"2026-10-08T13:53:41+00:00","cve":"CVE-2026-98292","urls":{"html":"https://cve.report/CVE-2026-98292","api":"https://cve.report/api/cve/CVE-2026-98292.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98292","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98292"},"summary":{"title":"Bluetooth: btmtksdio, btmtkuart: validate WMT event length before struct access","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btmtksdio, btmtkuart: validate WMT event length before struct access\n\nbtmtksdio.c and btmtkuart.c cast a received WMT event straight to\nstruct btmtk_hci_wmt_evt and read its op/flag fields without checking\nthe event is long enough to contain them, unlike btmtk.c. The\nFUNC_CTRL case then further casts to struct btmtk_hci_wmt_evt_funcc\nand reads its 2-byte status field, again without a length check.\nFirmware that sends a short or malformed WMT event makes both drivers\nread past the end of the received SKB.\n\nMirror btmtk.c: validate the base WMT header with skb_pull_data()\nbefore touching any of its fields, and when a FUNC_CTRL event turns\nout to be the short, header-only form (a plain enable/disable ack\nwith no status word), decode the result from the header's own flag\nbyte instead (0 = success, otherwise failure).\n\nVerified setup on MT7920, MT7921, MT7922 and MT7925: no regression.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-06 09:18:19","updated_at":"2026-10-06 09:18:19"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/8879e3e0a84a86954c855caceead4867e74a9a27","name":"https://git.kernel.org/stable/c/8879e3e0a84a86954c855caceead4867e74a9a27","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5a5cfd8488c97e1b8939515429fe4c81e9f2df4f","name":"https://git.kernel.org/stable/c/5a5cfd8488c97e1b8939515429fe4c81e9f2df4f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98292","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98292","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e0b67035a90b58d01f911fed77b6e3da153da66e 5a5cfd8488c97e1b8939515429fe4c81e9f2df4f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e0b67035a90b58d01f911fed77b6e3da153da66e 8879e3e0a84a86954c855caceead4867e74a9a27 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.1","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.8 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc4 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98292","cve":"CVE-2026-98292","epss":"0.001620000","percentile":"0.048430000","score_date":"2026-10-06","updated_at":"2026-10-07 00:14:55"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/bluetooth/btmtksdio.c","drivers/bluetooth/btmtkuart.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"5a5cfd8488c97e1b8939515429fe4c81e9f2df4f","status":"affected","version":"e0b67035a90b58d01f911fed77b6e3da153da66e","versionType":"git"},{"lessThan":"8879e3e0a84a86954c855caceead4867e74a9a27","status":"affected","version":"e0b67035a90b58d01f911fed77b6e3da153da66e","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/bluetooth/btmtksdio.c","drivers/bluetooth/btmtkuart.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.1"},{"lessThan":"5.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc4","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.8","versionStartIncluding":"5.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc4","versionStartIncluding":"5.1","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btmtksdio, btmtkuart: validate WMT event length before struct access\n\nbtmtksdio.c and btmtkuart.c cast a received WMT event straight to\nstruct btmtk_hci_wmt_evt and read its op/flag fields without checking\nthe event is long enough to contain them, unlike btmtk.c. The\nFUNC_CTRL case then further casts to struct btmtk_hci_wmt_evt_funcc\nand reads its 2-byte status field, again without a length check.\nFirmware that sends a short or malformed WMT event makes both drivers\nread past the end of the received SKB.\n\nMirror btmtk.c: validate the base WMT header with skb_pull_data()\nbefore touching any of its fields, and when a FUNC_CTRL event turns\nout to be the short, header-only form (a plain enable/disable ack\nwith no status word), decode the result from the header's own flag\nbyte instead (0 = success, otherwise failure).\n\nVerified setup on MT7920, MT7921, MT7922 and MT7925: no regression."}],"providerMetadata":{"dateUpdated":"2026-10-06T08:45:51.807Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/5a5cfd8488c97e1b8939515429fe4c81e9f2df4f"},{"url":"https://git.kernel.org/stable/c/8879e3e0a84a86954c855caceead4867e74a9a27"}],"title":"Bluetooth: btmtksdio, btmtkuart: validate WMT event length before struct access","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98292","datePublished":"2026-10-06T08:45:51.807Z","dateReserved":"2026-09-25T10:25:14.336Z","dateUpdated":"2026-10-06T08:45:51.807Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-06 09:18:19","lastModifiedDate":"2026-10-06 09:18:19","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98292","Ordinal":"1","Title":"Bluetooth: btmtksdio, btmtkuart: validate WMT event length befor","CVE":"CVE-2026-98292","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98292","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btmtksdio, btmtkuart: validate WMT event length before struct access\n\nbtmtksdio.c and btmtkuart.c cast a received WMT event straight to\nstruct btmtk_hci_wmt_evt and read its op/flag fields without checking\nthe event is long enough to contain them, unlike btmtk.c. The\nFUNC_CTRL case then further casts to struct btmtk_hci_wmt_evt_funcc\nand reads its 2-byte status field, again without a length check.\nFirmware that sends a short or malformed WMT event makes both drivers\nread past the end of the received SKB.\n\nMirror btmtk.c: validate the base WMT header with skb_pull_data()\nbefore touching any of its fields, and when a FUNC_CTRL event turns\nout to be the short, header-only form (a plain enable/disable ack\nwith no status word), decode the result from the header's own flag\nbyte instead (0 = success, otherwise failure).\n\nVerified setup on MT7920, MT7921, MT7922 and MT7925: no regression.","Type":"Description","Title":"Bluetooth: btmtksdio, btmtkuart: validate WMT event length befor"}]}}}