CVE-2026-53073None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_ldisc: Clear HCI_UART_PROTO_INIT on error When hci_register_dev() fails in hci_uart_register_dev() HCI_UART_PROTO_INIT is not cleared before calling hu-…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_ldisc: Clear HCI_UART_PROTO_INIT on error
When hci_register_dev() fails in hci_uart_register_dev() HCI_UART_PROTO_INIT is not cleared before calling hu->proto->close(hu) and setting hu->hdev to NULL. This means incoming UART data will reach the protocol-specific recv handler in hci_uart_tty_receive() after resources are freed.
Clear HCI_UART_PROTO_INIT with a write lock before calling hu->proto->close() and setting hu->hdev to NULL. The write lock ensures all active readers have completed and no new reader can enter the protocol recv path before resources are freed.
This allows the protocol-specific recv functions to remove the "HCI_UART_REGISTERED" guard without risking a null pointer dereference if hci_register_dev() fails.
Linux >= a40f94f7caa8d3421b64f63ac31bc0f24c890f39 < ebb39b2d81731b83ee71a1ba6dd0291a57b5ac07Linux >= 9e5a0f5777162e503400c70c6ed25fbbe2d38799 < ed4033fb85ccaaf6c3983be3c7b037e48253d232Linux >= 80f14e9de6a43a0bd8194cad1003a3e6dcbc3984 < 356dee1bcac4d0d9152390561fa63331ebff211bLinux >= 02e1bcdfdf769974e7e9fa285e295cd9852e2a38 < a673cf6c4ac702cb79ac1f4d7fc4de763a6a3e40Linux >= 281782d2c6730241e300d630bb9f200d831ede71 < f4b69c35813c432973d340d3600c01de106ed474Linux >= 5df5dafc171b90d0b8d51547a82657cd5a1986c7 < 3daa5818e473ed60eb69d8b5c71b651909d28c5aLinux >= 5df5dafc171b90d0b8d51547a82657cd5a1986c7 < 194f029a4d7f739e44ebc1f473120187b4de5104Linux >= 5df5dafc171b90d0b8d51547a82657cd5a1986c7 < 68d39ea5e0adc9ecaea1ce8abd842ec972eb8718Linux 1dcf08fcff5ca529de6dc0395091f28854f4e54aLinux 8e5aff600539e5faea294d9612cca50220e602b8Linux db7509fa110dd9b11134b75894677f30353b2c51Linux >= 5.10.237 < 5.10.258Linux >= 5.15.181 < 5.15.209Linux >= 6.1.135 < 6.1.175Linux >= 6.6.88 < 6.6.141Linux >= 6.12.24 < 6.12.91Linux >= 5.4.293 < 5.5Linux >= 6.13.12 < 6.14Linux >= 6.14.3 < 6.15Linux 6.15Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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