{"schema":"threatline.record/2","record":{"id":"CVE-2026-99014","aliases":[],"summary":"Bluetooth: hci_sync: Fix command skb lifetime during scan setup","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: Fix command skb lifetime during scan setup\n\nDuring PA sync scan setup, hci_le_set_ext_scan_param_sync() gets the\naddress used for the PA_LINK lookup from hci_sent_cmd_data(). The\nreturned pointer borrows storage from sent_cmd or req_skb, without\nholding a reference to either skb.\n\nThe scan worker runs on req_workqueue while hci_cmd_work() runs on the\nseparate device workqueue. After the scan worker loads sent_cmd, the\ncommand worker can free and replace it before hci_sent_cmd_data()\ndereferences the skb. The command payload can also be freed between\nreturning from the helper and comparing the address. The connection\nlookup's RCU critical section does not protect the command skb.\n\nKASAN reported:\n\n  BUG: KASAN: slab-use-after-free in hci_sent_cmd_data+0x27c/0x2f0\n  Workqueue: hci0 hci_cmd_sync_work\n  Call Trace:\n   hci_sent_cmd_data+0x27c/0x2f0\n   hci_le_set_scan_param_sync+0x43a/0x850\n   hci_passive_scan_sync+0xb09/0x1460\n   hci_update_passive_scan_sync+0x47c/0x6e0\n   hci_le_pa_create_sync+0x200/0xa70\n   hci_cmd_sync_work+0x13c/0x290\n\n  Allocated by task 95:\n   skb_clone+0x13f/0x340\n   hci_cmd_work+0x2a9/0x7e0\n\n  Freed by task 95:\n   kmem_cache_free+0xba/0x3a0\n   hci_cmd_work+0x29c/0x7e0\n\nUse hdev->lock to serialize the address snapshot with sent_cmd\nreplacement. Protect req_skb replacement and completion cleanup with\nthe same lock because the helper falls back to that skb. Copy the\naddress before releasing the lock and use the copy for the existing\nRCU-protected connection lookup. Release the mutex before sending or\nwaiting for commands, preserving the lookup and completion ordering.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99014","source_modified_at":"2026-10-23T12:20:39.617Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"de3c85d321bfb85b7742a6cfab95d680da3e26b1","lessThan":"f01cbddfb4273fcc9a786d13b0a2525029023605","status":"affected","versionType":"git"},{"version":"22cbf4f84c00da64196eb15034feee868e63eef0","lessThan":"119ba8070b3f112dd36c897f4f70ea5bb7d370b8","status":"affected","versionType":"git"},{"version":"22cbf4f84c00da64196eb15034feee868e63eef0","lessThan":"7db33b36213a3a1a40940c009ddac30670b55922","status":"affected","versionType":"git"},{"version":"22cbf4f84c00da64196eb15034feee868e63eef0","lessThan":"762850c203fab1190ad6a3de41cd51920b22236d","status":"affected","versionType":"git"},{"version":"22cbf4f84c00da64196eb15034feee868e63eef0","lessThan":"9af12272061d206af8bc3e40215cb694421ab73a","status":"affected","versionType":"git"},{"version":"7a54f8314584f78fb0557153b1059924249ef628","status":"affected","versionType":"git"},{"version":"6.6.28","lessThan":"6.6.160","status":"affected","versionType":"semver"},{"version":"6.8.7","lessThan":"6.9","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99014","source_modified_at":"2026-10-23T12:20:39.617Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.9","status":"affected"},{"version":"0","lessThan":"6.9","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.114","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.57","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.11","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-2026-99014","source_modified_at":"2026-10-23T12:20:39.617Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"119ba8070b3f112dd36c897f4f70ea5bb7d370b8","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99014","source_modified_at":"2026-10-23T12:20:39.617Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"7db33b36213a3a1a40940c009ddac30670b55922","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99014","source_modified_at":"2026-10-23T12:20:39.617Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"762850c203fab1190ad6a3de41cd51920b22236d","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99014","source_modified_at":"2026-10-23T12:20:39.617Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"9af12272061d206af8bc3e40215cb694421ab73a","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99014","source_modified_at":"2026-10-23T12:20:39.617Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"6.6.160","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99014","source_modified_at":"2026-10-23T12:20:39.617Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"6.9","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-23T12:20:39.617Z","modified_at":"2026-10-23T12:20:39.617Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-99014","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T12:20:39.617Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/f01cbddfb4273fcc9a786d13b0a2525029023605"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/119ba8070b3f112dd36c897f4f70ea5bb7d370b8"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/7db33b36213a3a1a40940c009ddac30670b55922"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/762850c203fab1190ad6a3de41cd51920b22236d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/9af12272061d206af8bc3e40215cb694421ab73a"}],"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":"2026-10-23T12:20:39.617Z","content_hash":"1e5ff6caa9c149b55721f11bb2b2572c523ecb40bb9197e673bf885cf1cba91f"}}