{"api_version":"1","generated_at":"2026-08-13T18:00:34+00:00","cve":"CVE-2026-68339","urls":{"html":"https://cve.report/CVE-2026-68339","api":"https://cve.report/api/cve/CVE-2026-68339.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-68339","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-68339"},"summary":{"title":"Bluetooth: btusb: validate Realtek vendor event length","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btusb: validate Realtek vendor event length\n\nbtusb_recv_event_realtek() reads the event code at data[0] and the Realtek\nsubevent code at data[2] before deciding whether to consume a vendor event\nas a coredump.\n\nFor example, the two-byte event ff 00 contains a complete vendor-event\nheader declaring zero parameters. The old classifier still reads a\nnonexistent third byte and can misclassify the event as a coredump if the\nadjacent byte is 0x34.\n\nRequire the HCI event header and first parameter to be present before\ninspecting the Realtek subevent code. Short events continue through the\nnormal HCI receive path, which owns their protocol validation.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-10 13:20:24","updated_at":"2026-08-10 13:20:24"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/8de58bfa26e028f99271dde5a92107cd07f5e063","name":"https://git.kernel.org/stable/c/8de58bfa26e028f99271dde5a92107cd07f5e063","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/df541cd485ff80a5ddc579d99687bc7506df9851","name":"https://git.kernel.org/stable/c/df541cd485ff80a5ddc579d99687bc7506df9851","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8881daaafadbe7fb2b7341d16a3949114409c90c","name":"https://git.kernel.org/stable/c/8881daaafadbe7fb2b7341d16a3949114409c90c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/400267bab0f4076088e163e58cad2bb41c3cf5e7","name":"https://git.kernel.org/stable/c/400267bab0f4076088e163e58cad2bb41c3cf5e7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/24b0758193d70da47ef8b979153d2a181dbdf34e","name":"https://git.kernel.org/stable/c/24b0758193d70da47ef8b979153d2a181dbdf34e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-68339","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68339","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 044014ce85a17c0b7fab8e5df0925792010c29b2 8de58bfa26e028f99271dde5a92107cd07f5e063 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 044014ce85a17c0b7fab8e5df0925792010c29b2 400267bab0f4076088e163e58cad2bb41c3cf5e7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 044014ce85a17c0b7fab8e5df0925792010c29b2 8881daaafadbe7fb2b7341d16a3949114409c90c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 044014ce85a17c0b7fab8e5df0925792010c29b2 24b0758193d70da47ef8b979153d2a181dbdf34e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 044014ce85a17c0b7fab8e5df0925792010c29b2 df541cd485ff80a5ddc579d99687bc7506df9851 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.148 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.101 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.42 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.6 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc5 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/bluetooth/btusb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8de58bfa26e028f99271dde5a92107cd07f5e063","status":"affected","version":"044014ce85a17c0b7fab8e5df0925792010c29b2","versionType":"git"},{"lessThan":"400267bab0f4076088e163e58cad2bb41c3cf5e7","status":"affected","version":"044014ce85a17c0b7fab8e5df0925792010c29b2","versionType":"git"},{"lessThan":"8881daaafadbe7fb2b7341d16a3949114409c90c","status":"affected","version":"044014ce85a17c0b7fab8e5df0925792010c29b2","versionType":"git"},{"lessThan":"24b0758193d70da47ef8b979153d2a181dbdf34e","status":"affected","version":"044014ce85a17c0b7fab8e5df0925792010c29b2","versionType":"git"},{"lessThan":"df541cd485ff80a5ddc579d99687bc7506df9851","status":"affected","version":"044014ce85a17c0b7fab8e5df0925792010c29b2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/bluetooth/btusb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.6"},{"lessThan":"6.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.148","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc5","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.148","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.101","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.42","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.6","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc5","versionStartIncluding":"6.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btusb: validate Realtek vendor event length\n\nbtusb_recv_event_realtek() reads the event code at data[0] and the Realtek\nsubevent code at data[2] before deciding whether to consume a vendor event\nas a coredump.\n\nFor example, the two-byte event ff 00 contains a complete vendor-event\nheader declaring zero parameters. The old classifier still reads a\nnonexistent third byte and can misclassify the event as a coredump if the\nadjacent byte is 0x34.\n\nRequire the HCI event header and first parameter to be present before\ninspecting the Realtek subevent code. Short events continue through the\nnormal HCI receive path, which owns their protocol validation."}],"providerMetadata":{"dateUpdated":"2026-08-10T12:03:15.551Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/8de58bfa26e028f99271dde5a92107cd07f5e063"},{"url":"https://git.kernel.org/stable/c/400267bab0f4076088e163e58cad2bb41c3cf5e7"},{"url":"https://git.kernel.org/stable/c/8881daaafadbe7fb2b7341d16a3949114409c90c"},{"url":"https://git.kernel.org/stable/c/24b0758193d70da47ef8b979153d2a181dbdf34e"},{"url":"https://git.kernel.org/stable/c/df541cd485ff80a5ddc579d99687bc7506df9851"}],"title":"Bluetooth: btusb: validate Realtek vendor event length","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-68339","datePublished":"2026-08-10T12:03:15.551Z","dateReserved":"2026-07-30T09:28:09.384Z","dateUpdated":"2026-08-10T12:03:15.551Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-10 13:20:24","lastModifiedDate":"2026-08-10 13:20:24","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"68339","Ordinal":"1","Title":"Bluetooth: btusb: validate Realtek vendor event length","CVE":"CVE-2026-68339","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"68339","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btusb: validate Realtek vendor event length\n\nbtusb_recv_event_realtek() reads the event code at data[0] and the Realtek\nsubevent code at data[2] before deciding whether to consume a vendor event\nas a coredump.\n\nFor example, the two-byte event ff 00 contains a complete vendor-event\nheader declaring zero parameters. The old classifier still reads a\nnonexistent third byte and can misclassify the event as a coredump if the\nadjacent byte is 0x34.\n\nRequire the HCI event header and first parameter to be present before\ninspecting the Realtek subevent code. Short events continue through the\nnormal HCI receive path, which owns their protocol validation.","Type":"Description","Title":"Bluetooth: btusb: validate Realtek vendor event length"}]}}}