In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sock: reject out-of-range OCF values The raw HCI socket security filter has 128 OCF bits per supported OGF, but masks the 10-bit OCF with 127 before looking up the command. An unprivileged socket can therefore submit a reserved OCF that aliases an allowlisted command modulo 128. A conforming controller should reject reserved opcodes. Nevertheless, the security decision must apply to the opcode that will actually be sent, especially since controller-specific behavior is outside the host stack's control. Reject OCF values that cannot be represented by the security filter instead of aliasing them onto an unrelated command.
Fix
Microsoft's update · Important
- Release Notes — azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 · build 6.6.159.1-1
From the 2026-Oct release note of Microsoft's Security Update Guide, revised 2026-10-31.
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 2
- StatusReceived → PublishedNVD modified 2026-10-19 09:19
- First seenunscoredNVD modified 2026-10-19 10:18
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 8
- https://git.kernel.org/stable/c/173457fa3e99ef4188dd0fe63e4dee98d0e441a9
- https://git.kernel.org/stable/c/320dedad15e8bbaecc8d2d7fd4189defb84caa85
- https://git.kernel.org/stable/c/47d67ec424e63e61e9eb58633d43a9d58a1852b6
- https://git.kernel.org/stable/c/598686f5d65b9af2223ed9d22fadba16e09f6ca8
- https://git.kernel.org/stable/c/68f0bcc4e16e31ff8dbe6ca93116eb70d7b6ac44
- https://git.kernel.org/stable/c/70b0a27bdde0cb524349c8261202c7c9393cf5e9
- https://git.kernel.org/stable/c/c1fd465ea1c5aef459f9bc3ac602b5353e0f536f
- https://git.kernel.org/stable/c/e93fad891c72deb84cae49430163b384ebcc92b1