Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected a40f94f7caa8d3421b64f63ac31bc0f24c890f39 before ebb39b2d81731b83ee71a1ba6dd0291a57b5ac07; affected 9e5a0f5777162e503400c70c6ed25fbbe2d38799 before ed4033fb85ccaaf6c3983be3c7b037e48253d232; affected 80f14e9de6a43a0bd8194cad1003a3e6dcbc3984 before 356dee1bcac4d0d9152390561fa63331ebff211b; affected 02e1bcdfdf769974e7e9fa285e295cd9852e2a38 before a673cf6c4ac702cb79ac1f4d7fc4de763a6a3e40; affected 281782d2c6730241e300d630bb9f200d831ede71 before f4b69c35813c432973d340d3600c01de106ed474; affected 5df5dafc171b90d0b8d51547a82657cd5a1986c7 before 3daa5818e473ed60eb69d8b5c71b651909d28c5a; affected 5df5dafc171b90d0b8d51547a82657cd5a1986c7 before 194f029a4d7f739e44ebc1f473120187b4de5104; affected 5df5dafc171b90d0b8d51547a82657cd5a1986c7 before 68d39ea5e0adc9ecaea1ce8abd842ec972eb8718; affected 1dcf08fcff5ca529de6dc0395091f28854f4e54a; affected 8e5aff600539e5faea294d9612cca50220e602b8; affected db7509fa110dd9b11134b75894677f30353b2c51; affected 5.10.237 before 5.10.258; affected 5.15.181 before 5.15.209; affected 6.1.135 before 6.1.175; affected 6.6.88 before 6.6.141; affected 6.12.24 before 6.12.91; affected 5.4.293 before 5.5; affected 6.13.12 before 6.14; affected 6.14.3 before 6.15 |
| Linux / Linux | affected 6.15; unaffected 0 before 6.15; unaffected 5.10.258 through 5.10.*; unaffected 5.15.209 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.141 through 6.6.*; unaffected 6.12.91 through 6.12.*; unaffected 6.18.33 through 6.18.*; unaffected 7.0.10 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/ebb39b2d81731b83ee71a1ba6dd0291a57b5ac07
- https://git.kernel.org/stable/c/ed4033fb85ccaaf6c3983be3c7b037e48253d232
- https://git.kernel.org/stable/c/356dee1bcac4d0d9152390561fa63331ebff211b
- https://git.kernel.org/stable/c/a673cf6c4ac702cb79ac1f4d7fc4de763a6a3e40
- https://git.kernel.org/stable/c/f4b69c35813c432973d340d3600c01de106ed474
- https://git.kernel.org/stable/c/3daa5818e473ed60eb69d8b5c71b651909d28c5a
- https://git.kernel.org/stable/c/194f029a4d7f739e44ebc1f473120187b4de5104
- https://git.kernel.org/stable/c/68d39ea5e0adc9ecaea1ce8abd842ec972eb8718