CVE-2025-40308
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Bluetooth: bcsp: receive data only if registered
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 48effdb7a798232db945503cf3f51e0be8070cea | affected | git | 39a7d40314b6288cfa2d13269275e9247a7a055a | Unavailable | None listed |
| 45fa7bd82c6178f4fec0ab94891144a043ec5fe8 | affected | git | 164586725b47f9d61912e6bf17dbaffeff11710b | Unavailable | None listed |
| d71a57a34ab6bbc95dc461158403c02e8ff3f912 | affected | git | b65ca9708bfbf47d8b7bd44b7c574bd16798e9c9 | Unavailable | None listed |
| 9cf7dccaa7f4c56d2089700e5cb11f85a8d5f6cf | affected | git | 8b892dbef3887dbe9afdc7176d1a5fd90e1636aa | Unavailable | None listed |
| 806464634e7fc6b523160defeeddb1ade2a72f81 | affected | git | 799cd62cbcc3f12ee04b33ef390ff7d41c37d671 | Unavailable | None listed |
| 6b7a32fa9bacdebd98c18b2a56994116995ee643 | affected | git | b420a4c7f915fc1c94ad1f6ca740acc046d94334 | Unavailable | None listed |
| 366ceff495f902182d42b6f41525c2474caf3f9a | affected | git | 55c1519fca830f59a10bbf9aa8209c87b06cf7bc | Unavailable | None listed |
| 366ceff495f902182d42b6f41525c2474caf3f9a | affected | git | ca94b2b036c22556c3a66f1b80f490882deef7a6 | Unavailable | None listed |
| 15543b7bbe7b5f744fdbb44f75b14f81a0117813 | affected | git | Unavailable | Unavailable | None listed |
| a4b89a45b12b69bc82c8137346b150a118e02c26 | affected | git | Unavailable | Unavailable | None listed |
| 5.4.293 | affected | semver | 5.4.302 | Unavailable | None listed |
| 5.10.237 | affected | semver | 5.10.247 | Unavailable | None listed |
| 5.15.181 | affected | semver | 5.15.197 | Unavailable | None listed |
| 6.1.135 | affected | semver | 6.1.159 | Unavailable | None listed |
| 6.6.88 | affected | semver | 6.6.117 | Unavailable | None listed |
| 6.12.24 | affected | semver | 6.12.58 | Unavailable | None listed |
| 6.13.12 | affected | semver | 6.14 | Unavailable | None listed |
| 6.14.3 | affected | semver | 6.15 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.15 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.15 | Unavailable | None listed |
| 5.4.302 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.247 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.197 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.159 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.117 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.58 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.17.8 | unaffected | semver | Unavailable | 6.17.* | None listed |
| 6.18 | unaffected | original_commit_for_fix | Unavailable | * | None listed |