{"schema":"threatline.record/2","record":{"id":"CVE-2026-98456","aliases":[],"summary":"Bluetooth: mgmt: fix race in read_unconf_index_list()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: mgmt: fix race in read_unconf_index_list()\n\nread_unconf_index_list() counts unconfigured controllers before allocating\nits response, then checks the device flags again while filling it.\n\nhci_dev_list_lock stabilizes list membership, but it does not serialize the\nper-device flags. During asynchronous controller setup, the worker can set\nHCI_UNCONFIGURED and clear HCI_SETUP between the two passes. A controller\nomitted from the allocation count can then become eligible for the fill\npass, causing an out-of-bounds write to rp->index[].\n\nAllocate space for every device on hci_dev_list. Since list membership\ncannot change while hci_dev_list_lock is held, the response remains large\nenough regardless of flag transitions. The reported count and response\nlength still include only eligible unconfigured controllers.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98456","source_modified_at":"2026-10-19T09:19:52.889Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"73d1df2a7a1036a1f000e5f0ece6ade3e082b854","lessThan":"524e0450dd9a396f99a81b045219b0e2ea0dab57","status":"affected","versionType":"git"},{"version":"73d1df2a7a1036a1f000e5f0ece6ade3e082b854","lessThan":"8ddf962c76432a10a6cb80042875cbc48a9c056b","status":"affected","versionType":"git"},{"version":"73d1df2a7a1036a1f000e5f0ece6ade3e082b854","lessThan":"416546cd6a54e9b68f2b91bc680b1ee17dcd77a1","status":"affected","versionType":"git"},{"version":"73d1df2a7a1036a1f000e5f0ece6ade3e082b854","lessThan":"2e8bba0360d1379bfa8da47c8f5dadbb10a3fba1","status":"affected","versionType":"git"},{"version":"73d1df2a7a1036a1f000e5f0ece6ade3e082b854","lessThan":"b5dbb41b212c50c095a4dbee3017a84fe94f033b","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98456","source_modified_at":"2026-10-19T09:19:52.889Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"3.17","status":"affected"},{"version":"0","lessThan":"3.17","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.55","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.9","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98456","source_modified_at":"2026-10-19T09:19:52.889Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"524e0450dd9a396f99a81b045219b0e2ea0dab57","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98456","source_modified_at":"2026-10-19T09:19:52.889Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"8ddf962c76432a10a6cb80042875cbc48a9c056b","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98456","source_modified_at":"2026-10-19T09:19:52.889Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"416546cd6a54e9b68f2b91bc680b1ee17dcd77a1","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98456","source_modified_at":"2026-10-19T09:19:52.889Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"2e8bba0360d1379bfa8da47c8f5dadbb10a3fba1","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00168,"percentile":0.05726,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:15:05.909Z","modified_at":"2026-10-19T09:19:52.889Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98456","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:19:52.889Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98456","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/524e0450dd9a396f99a81b045219b0e2ea0dab57"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/8ddf962c76432a10a6cb80042875cbc48a9c056b"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/416546cd6a54e9b68f2b91bc680b1ee17dcd77a1"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/2e8bba0360d1379bfa8da47c8f5dadbb10a3fba1"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/b5dbb41b212c50c095a4dbee3017a84fe94f033b"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:19:52.889Z","content_hash":"89bbe89c77e1d548ac800738071a6b613bdb949003bbca9c09563e7889c464d0"}}