{"schema":"threatline.record/2","record":{"id":"CVE-2026-98246","aliases":[],"summary":"Bluetooth: hci_sync: Serialize local codec list cleanup","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: Serialize local codec list cleanup\n\nhci_dev_close_sync() clears hdev->local_codecs after releasing hdev->lock.\nCodec list additions and both traversals in sco_sock_getsockopt() use that\nlock, but the close path does not. A close and BT_CODEC query can therefore\ninterleave as follows:\n\n  hci_dev_close_sync()          sco_sock_getsockopt()\n                                hci_dev_lock()\n                                fetch codec entry\n  hci_codec_list_clear()\n    kfree(entry)\n                                read entry->id\n\nThe reader then accesses an entry which the close path has freed. KASAN\n\n  BUG: KASAN: slab-use-after-free in sco_sock_getsockopt+0xfa0/0xfe0\n  Read of size 1 at addr ffff8881001c3450\n  Call Trace:\n   sco_sock_getsockopt+0xfa0/0xfe0\n   do_sock_getsockopt+0x537/0x7b0\n   __sys_getsockopt+0xf2/0x170\n  Allocated by task 92:\n   hci_codec_list_add.isra.0+0x2c/0x440\n   hci_read_codec_capabilities+0x224/0x590\n   hci_read_supported_codecs+0x2c2/0x640\n  Freed by task 92:\n   kfree+0x131/0x3c0\n   hci_codec_list_clear+0xd8/0x160\n   hci_dev_close_sync+0x92a/0xfa0\n\nTake hdev->lock around the clear operation at its existing point in the\nclose path. This makes the clear wait for active readers and prevents a new\ntraversal until the list is empty without changing teardown ordering.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98246","source_modified_at":"2026-10-19T09:16:17.812Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"626535077ba9dc110787540d1fe24881094c15a1","lessThan":"9f407d52c0d881430d689836d3e7d32aa36f98b5","status":"affected","versionType":"git"},{"version":"b938790e70540bf4f2e653dcd74b232494d06c8f","lessThan":"560ed4373c06a58123ecdf9ad5ecaddc87a73382","status":"affected","versionType":"git"},{"version":"b938790e70540bf4f2e653dcd74b232494d06c8f","lessThan":"1ee0c5429dc4a92879bda2554b1bfd4abc6c587c","status":"affected","versionType":"git"},{"version":"b938790e70540bf4f2e653dcd74b232494d06c8f","lessThan":"4dc1ae5ff75b17e17ec4b74b11cc4b0099e71e00","status":"affected","versionType":"git"},{"version":"b938790e70540bf4f2e653dcd74b232494d06c8f","lessThan":"1276c2fafd18499769a28f96f45c5a76d6fc990e","status":"affected","versionType":"git"},{"version":"b938790e70540bf4f2e653dcd74b232494d06c8f","lessThan":"9a10987a2f160a44a638c9a35994ca6e3089696e","status":"affected","versionType":"git"},{"version":"eea5a8f0c3b7c884d2351e75fbdd0a3d7def5ae1","status":"affected","versionType":"git"},{"version":"6.1.57","lessThan":"6.1.189","status":"affected","versionType":"semver"},{"version":"6.5.7","lessThan":"6.6","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98246","source_modified_at":"2026-10-19T09:16:17.812Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.6","status":"affected"},{"version":"0","lessThan":"6.6","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","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":"6.18.54","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.8","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-2026-98246","source_modified_at":"2026-10-19T09:16:17.812Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"9f407d52c0d881430d689836d3e7d32aa36f98b5","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98246","source_modified_at":"2026-10-19T09:16:17.812Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"560ed4373c06a58123ecdf9ad5ecaddc87a73382","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98246","source_modified_at":"2026-10-19T09:16:17.812Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"1ee0c5429dc4a92879bda2554b1bfd4abc6c587c","basis":"first unaffected version stated in the CVE record"},{"source":"CVE 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List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98246","source_modified_at":"2026-10-19T09:16:17.812Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6.1.189","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98246","source_modified_at":"2026-10-19T09:16:17.812Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6.6","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.0018,"percentile":0.07201,"score_date":"2026-10-23"},"published_at":"2026-10-06T08:45:15.411Z","modified_at":"2026-10-19T09:16:17.812Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98246","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:16:17.812Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98246","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/9f407d52c0d881430d689836d3e7d32aa36f98b5"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/560ed4373c06a58123ecdf9ad5ecaddc87a73382"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/1ee0c5429dc4a92879bda2554b1bfd4abc6c587c"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/4dc1ae5ff75b17e17ec4b74b11cc4b0099e71e00"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/1276c2fafd18499769a28f96f45c5a76d6fc990e"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/9a10987a2f160a44a638c9a35994ca6e3089696e"}],"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":"2026-10-19T09:16:17.812Z","content_hash":"90d7dd2ab72fabf13c2dda49196869a687ce846c4e1ef9ac68a778f07fbc85fb"}}