{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-23146", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-23146", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-02-14T16:01:16.169Z", "updatedAt": "2026-10-19T18:25:33.428Z", "importedAt": "2026-10-24T01:58:02.025Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "Bluetooth: hci_uart: fix null-ptr-deref in hci_uart_write_work", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_uart: fix null-ptr-deref in hci_uart_write_work\n\nhci_uart_set_proto() sets HCI_UART_PROTO_INIT before calling\nhci_uart_register_dev(), which calls proto->open() to initialize\nhu->priv. However, if a TTY write wakeup occurs during this window,\nhci_uart_tx_wakeup() may schedule write_work before hu->priv is\ninitialized, leading to a NULL pointer dereference in\nhci_uart_write_work() when proto->dequeue() accesses hu->priv.\n\nThe race condition is:\n\n CPU0 CPU1\n ---- ----\n hci_uart_set_proto()\n set_bit(HCI_UART_PROTO_INIT)\n hci_uart_register_dev()\n tty write wakeup\n hci_uart_tty_wakeup()\n hci_uart_tx_wakeup()\n schedule_work(&hu->write_work)\n proto->open(hu)\n // initializes hu->priv\n hci_uart_write_work()\n hci_uart_dequeue()\n proto->dequeue(hu)\n // accesses hu->priv (NULL!)\n\nFix this by moving set_bit(HCI_UART_PROTO_INIT) after proto->open()\nsucceeds, ensuring hu->priv is initialized before any work can be\nscheduled.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "a40f94f7caa8d3421b64f63ac31bc0f24c890f39", "status": "affected", "versionType": "git", "lessThan": "b0a900939e7e4866d9b90e9112514b72c451e873" }, { "version": "9e5a0f5777162e503400c70c6ed25fbbe2d38799", "status": "affected", "versionType": "git", "lessThan": "ccc683f597ceb28deb966427ae948e5ac739a909" }, { "version": "80f14e9de6a43a0bd8194cad1003a3e6dcbc3984", "status": "affected", "versionType": "git", "lessThan": "937a573423ce5a96fdb1fd425dc6b8d8d4ab5779" }, { "version": "02e1bcdfdf769974e7e9fa285e295cd9852e2a38", "status": "affected", "versionType": "git", "lessThan": "186d147cf7689ba1f9b3ddb753ab634a84940cc9" }, { "version": "281782d2c6730241e300d630bb9f200d831ede71", "status": "affected", "versionType": "git", "lessThan": "53e54cb31e667fca05b1808b990eac0807d1dab0" }, { "version": "5df5dafc171b90d0b8d51547a82657cd5a1986c7", "status": "affected", "versionType": "git", "lessThan": "03e8c90c62233382042b7bd0fa8b8900552fdb62" }, { "version": "5df5dafc171b90d0b8d51547a82657cd5a1986c7", "status": "affected", "versionType": "git", "lessThan": "0c3cd7a0b862c37acbee6d9502107146cc944398" }, { "version": "1dcf08fcff5ca529de6dc0395091f28854f4e54a", "status": "affected", "versionType": "git" }, { "version": "8e5aff600539e5faea294d9612cca50220e602b8", "status": "affected", "versionType": "git" }, { "version": "db7509fa110dd9b11134b75894677f30353b2c51", "status": "affected", "versionType": "git" }, { "version": "5.10.237", "status": "affected", "versionType": "semver", "lessThan": "5.10.249" }, { "version": "5.15.181", "status": "affected", "versionType": "semver", "lessThan": "5.15.199" }, { "version": "6.1.135", "status": "affected", "versionType": "semver", "lessThan": "6.1.162" }, { "version": "6.6.88", "status": "affected", "versionType": "semver", "lessThan": "6.6.123" }, { "version": "6.12.24", "status": "affected", "versionType": "semver", "lessThan": "6.12.69" }, { "version": "5.4.293", "status": "affected", "versionType": "semver", "lessThan": "5.5" }, { "version": "6.13.12", "status": "affected", "versionType": "semver", "lessThan": "6.14" }, { "version": "6.14.3", "status": "affected", "versionType": "semver", "lessThan": "6.15" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.15", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.15" }, { "version": "5.10.249", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.199", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.162", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.123", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.69", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.9", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "6.19", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }