{"id":"CVE-2026-98819","state":"PUBLISHED","title":"Bluetooth: btintel: validate DDC record lengths","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel: validate DDC record lengths\n\nParse DDC record lengths in unsigned storage so 0xFF does not wrap.\nReject records smaller than the mandatory three-byte header, records\nexceeding U8_MAX, and records exceeding remaining firmware bytes before\nissuing Intel_Write_DDC.\n\nThis issue was reported by Claude Mythos.","publishedAt":"2026-10-18T15:49:11.226Z","updatedAt":"2026-10-30T12:39:59.162Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"780665bed305718a9fbb10e4aa4d5570d772c9f6","versionType":"git"},{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"93f00db7441eec84a11029662f04b152386107a9","versionType":"git"},{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"e65c8f4ca39959889fcaf9779c3adf1a421aeb8d","versionType":"git"},{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"7df748aa9f9ecab514e5989ed89c9ba35b6e5574","versionType":"git"},{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"069031f569f1681f17e863f48c221a6091b47850","versionType":"git"},{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"b0fce76873a5e6a6820354409b26693ac5f8b251","versionType":"git"},{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"f3617369fbb30a4d2e54841ab8e92ca4fa211e56","versionType":"git"},{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"c9c15d4d8956df8c564f7c210e4dc5b9b820d97a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/bluetooth/btintel.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.4","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/bluetooth/btintel.c"]}],"references":["https://git.kernel.org/stable/c/780665bed305718a9fbb10e4aa4d5570d772c9f6","https://git.kernel.org/stable/c/93f00db7441eec84a11029662f04b152386107a9","https://git.kernel.org/stable/c/e65c8f4ca39959889fcaf9779c3adf1a421aeb8d","https://git.kernel.org/stable/c/7df748aa9f9ecab514e5989ed89c9ba35b6e5574","https://git.kernel.org/stable/c/069031f569f1681f17e863f48c221a6091b47850","https://git.kernel.org/stable/c/b0fce76873a5e6a6820354409b26693ac5f8b251","https://git.kernel.org/stable/c/f3617369fbb30a4d2e54841ab8e92ca4fa211e56","https://git.kernel.org/stable/c/c9c15d4d8956df8c564f7c210e4dc5b9b820d97a"],"weaknesses":[],"ingestedAt":"2026-10-30T13:00:06.648Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98819.json","commit":"cb14bf1b43b0c9f05f7f40eae2246263fd430780","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98819","state":"PUBLISHED","datePublished":"2026-10-18T15:49:11.226Z","dateUpdated":"2026-10-30T12:39:59.162Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.371Z"},"containers":{"cna":{"title":"Bluetooth: btintel: validate DDC record lengths","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel: validate DDC record lengths\n\nParse DDC record lengths in unsigned storage so 0xFF does not wrap.\nReject records smaller than the mandatory three-byte header, records\nexceeding U8_MAX, and records exceeding remaining firmware bytes before\nissuing Intel_Write_DDC.\n\nThis issue was reported by Claude Mythos."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"780665bed305718a9fbb10e4aa4d5570d772c9f6","versionType":"git"},{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"93f00db7441eec84a11029662f04b152386107a9","versionType":"git"},{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"e65c8f4ca39959889fcaf9779c3adf1a421aeb8d","versionType":"git"},{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"7df748aa9f9ecab514e5989ed89c9ba35b6e5574","versionType":"git"},{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"069031f569f1681f17e863f48c221a6091b47850","versionType":"git"},{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"b0fce76873a5e6a6820354409b26693ac5f8b251","versionType":"git"},{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"f3617369fbb30a4d2e54841ab8e92ca4fa211e56","versionType":"git"},{"version":"145f2368c5fd7962e37315ccc092670743019d08","status":"affected","lessThan":"c9c15d4d8956df8c564f7c210e4dc5b9b820d97a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/bluetooth/btintel.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.4","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/bluetooth/btintel.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/780665bed305718a9fbb10e4aa4d5570d772c9f6"},{"url":"https://git.kernel.org/stable/c/93f00db7441eec84a11029662f04b152386107a9"},{"url":"https://git.kernel.org/stable/c/e65c8f4ca39959889fcaf9779c3adf1a421aeb8d"},{"url":"https://git.kernel.org/stable/c/7df748aa9f9ecab514e5989ed89c9ba35b6e5574"},{"url":"https://git.kernel.org/stable/c/069031f569f1681f17e863f48c221a6091b47850"},{"url":"https://git.kernel.org/stable/c/b0fce76873a5e6a6820354409b26693ac5f8b251"},{"url":"https://git.kernel.org/stable/c/f3617369fbb30a4d2e54841ab8e92ca4fa211e56"},{"url":"https://git.kernel.org/stable/c/c9c15d4d8956df8c564f7c210e4dc5b9b820d97a"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:39:59.162Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}