Skip to content
CVE PROGRAM SOURCE RECORDUnscored

CVE-2025-40308

Bluetooth: bcsp: receive data only if registered

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bcsp: receive data only if registered Currently, bcsp_recv() can be called even when the BCSP protocol has not been registered. This leads to a NULL pointer dereference, as shown in the following stack trace: KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f] RIP: 0010:bcsp_recv+0x13d/0x1740 drivers/bluetooth/hci_bcsp.c:590 Call Trace: <TASK> hci_uart_tty_receive+0x194/0x220 drivers/bluetooth/hci_ldisc.c:627 tiocsti+0x23c/0x2c0 drivers/tty/tty_io.c:2290 tty_ioctl+0x626/0xde0 drivers/tty/tty_io.c:2706 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f To prevent this, ensure that the HCI_UART_REGISTERED flag is set before processing received data. If the protocol is not registered, return -EUNATCH.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 48effdb7a798232db945503cf3f51e0be8070cea to < 39a7d40314b6288cfa2d13269275e9247a7a055aaffected
  • 45fa7bd82c6178f4fec0ab94891144a043ec5fe8 to < 164586725b47f9d61912e6bf17dbaffeff11710baffected
  • d71a57a34ab6bbc95dc461158403c02e8ff3f912 to < b65ca9708bfbf47d8b7bd44b7c574bd16798e9c9affected
  • 9cf7dccaa7f4c56d2089700e5cb11f85a8d5f6cf to < 8b892dbef3887dbe9afdc7176d1a5fd90e1636aaaffected
  • 806464634e7fc6b523160defeeddb1ade2a72f81 to < 799cd62cbcc3f12ee04b33ef390ff7d41c37d671affected
  • 6b7a32fa9bacdebd98c18b2a56994116995ee643 to < b420a4c7f915fc1c94ad1f6ca740acc046d94334affected
  • 366ceff495f902182d42b6f41525c2474caf3f9a to < 55c1519fca830f59a10bbf9aa8209c87b06cf7bcaffected
  • 366ceff495f902182d42b6f41525c2474caf3f9a to < ca94b2b036c22556c3a66f1b80f490882deef7a6affected
  • 15543b7bbe7b5f744fdbb44f75b14f81a0117813affected
  • a4b89a45b12b69bc82c8137346b150a118e02c26affected
  • 5.4.293 to < 5.4.302affected
  • 5.10.237 to < 5.10.247affected
  • 5.15.181 to < 5.15.197affected
  • 6.1.135 to < 6.1.159affected
  • 6.6.88 to < 6.6.117affected
  • 6.12.24 to < 6.12.58affected
  • 6.13.12 to < 6.14affected
  • 6.14.3 to < 6.15affected

Linux Linux

Default version status: affected

  • 6.15affected
  • 0 to < 6.15unaffected
  • 5.4.302 to ≤ 5.4.*unaffected
  • 5.10.247 to ≤ 5.10.*unaffected
  • 5.15.197 to ≤ 5.15.*unaffected
  • 6.1.159 to ≤ 6.1.*unaffected
  • 6.6.117 to ≤ 6.6.*unaffected
  • 6.12.58 to ≤ 6.12.*unaffected
  • 6.17.8 to ≤ 6.17.*unaffected
  • 6.18 to ≤ *unaffected

References