{"id":"CVE-2026-98247","state":"PUBLISHED","title":"Bluetooth: hci_codec: validate vendor codec count length","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_codec: validate vendor codec count length\n\nThe Read Local Supported Codecs parsers consume the variable-sized\nstandard codec array before parsing the vendor codec count.  Although the\ninitial reply-size check includes a vendor count byte in the fixed layout,\nit does not guarantee that the byte remains after the standard codec array.\n\nIf a controller reply ends immediately after that array, calculating the\nvendor codec array size reads vnd_codecs->num beyond the skb data.  Use\nskb_pull_data() to validate and consume each codec header before using its\ncount in both command variants.","publishedAt":"2026-10-06T08:45:16.048Z","updatedAt":"2026-10-19T09:16:18.761Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8961987f3f5fa2f2618e72304d013c8dd5e604a6","status":"affected","lessThan":"9c04b9a4d08b95dee901d24b7607c4cbd65fa0a8","versionType":"git"},{"version":"8961987f3f5fa2f2618e72304d013c8dd5e604a6","status":"affected","lessThan":"a6da782fefae611e68a1aa79644065fc8ca5abcd","versionType":"git"},{"version":"8961987f3f5fa2f2618e72304d013c8dd5e604a6","status":"affected","lessThan":"e4cfd3c4299105237458b27958bd7b0aa4c60795","versionType":"git"},{"version":"8961987f3f5fa2f2618e72304d013c8dd5e604a6","status":"affected","lessThan":"f49a543d76d48f184b34225d9c0e2fc4cbdea8ec","versionType":"git"},{"version":"8961987f3f5fa2f2618e72304d013c8dd5e604a6","status":"affected","lessThan":"12a82819b0cada6e304790b1097f8f9006eb6123","versionType":"git"},{"version":"8961987f3f5fa2f2618e72304d013c8dd5e604a6","status":"affected","lessThan":"d0795cfd6f655f4de84868a4f4bb41a03f037b3d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_codec.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.16","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.54","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.8","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":["net/bluetooth/hci_codec.c"]}],"references":["https://git.kernel.org/stable/c/9c04b9a4d08b95dee901d24b7607c4cbd65fa0a8","https://git.kernel.org/stable/c/a6da782fefae611e68a1aa79644065fc8ca5abcd","https://git.kernel.org/stable/c/e4cfd3c4299105237458b27958bd7b0aa4c60795","https://git.kernel.org/stable/c/f49a543d76d48f184b34225d9c0e2fc4cbdea8ec","https://git.kernel.org/stable/c/12a82819b0cada6e304790b1097f8f9006eb6123","https://git.kernel.org/stable/c/d0795cfd6f655f4de84868a4f4bb41a03f037b3d"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98247.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98247","state":"PUBLISHED","datePublished":"2026-10-06T08:45:16.048Z","dateUpdated":"2026-10-19T09:16:18.761Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.330Z"},"containers":{"cna":{"title":"Bluetooth: hci_codec: validate vendor codec count length","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_codec: validate vendor codec count length\n\nThe Read Local Supported Codecs parsers consume the variable-sized\nstandard codec array before parsing the vendor codec count.  Although the\ninitial reply-size check includes a vendor count byte in the fixed layout,\nit does not guarantee that the byte remains after the standard codec array.\n\nIf a controller reply ends immediately after that array, calculating the\nvendor codec array size reads vnd_codecs->num beyond the skb data.  Use\nskb_pull_data() to validate and consume each codec header before using its\ncount in both command variants."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8961987f3f5fa2f2618e72304d013c8dd5e604a6","status":"affected","lessThan":"9c04b9a4d08b95dee901d24b7607c4cbd65fa0a8","versionType":"git"},{"version":"8961987f3f5fa2f2618e72304d013c8dd5e604a6","status":"affected","lessThan":"a6da782fefae611e68a1aa79644065fc8ca5abcd","versionType":"git"},{"version":"8961987f3f5fa2f2618e72304d013c8dd5e604a6","status":"affected","lessThan":"e4cfd3c4299105237458b27958bd7b0aa4c60795","versionType":"git"},{"version":"8961987f3f5fa2f2618e72304d013c8dd5e604a6","status":"affected","lessThan":"f49a543d76d48f184b34225d9c0e2fc4cbdea8ec","versionType":"git"},{"version":"8961987f3f5fa2f2618e72304d013c8dd5e604a6","status":"affected","lessThan":"12a82819b0cada6e304790b1097f8f9006eb6123","versionType":"git"},{"version":"8961987f3f5fa2f2618e72304d013c8dd5e604a6","status":"affected","lessThan":"d0795cfd6f655f4de84868a4f4bb41a03f037b3d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_codec.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.16","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.54","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.8","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":["net/bluetooth/hci_codec.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/9c04b9a4d08b95dee901d24b7607c4cbd65fa0a8"},{"url":"https://git.kernel.org/stable/c/a6da782fefae611e68a1aa79644065fc8ca5abcd"},{"url":"https://git.kernel.org/stable/c/e4cfd3c4299105237458b27958bd7b0aa4c60795"},{"url":"https://git.kernel.org/stable/c/f49a543d76d48f184b34225d9c0e2fc4cbdea8ec"},{"url":"https://git.kernel.org/stable/c/12a82819b0cada6e304790b1097f8f9006eb6123"},{"url":"https://git.kernel.org/stable/c/d0795cfd6f655f4de84868a4f4bb41a03f037b3d"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:16:18.761Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.18.54"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"7.2.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}