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More info:

https://nvd.nist.gov/vuln/detail/CVE-2023-45866

"Base Score: 8.8 HIGH"

"Bluetooth HID Hosts in BlueZ may permit an unauthenticated Peripheral role HID Device to initiate and establish an encrypted connection, and accept HID keyboard reports, potentially permitting injection of HID messages when no user interaction has occurred in the Central role to authorize such access. An example affected package is bluez 5.64-0ubuntu1 in Ubuntu 22.04LTS. NOTE: in some cases, a CVE-2020-0556 mitigation would have already addressed this Bluetooth HID Hosts issue."

https://www.thefinalhop.com/understanding-cve-2023-45866-a-critical-bluetooth-security-flaw/

"To address CVE-2023-45866, Google has released patches for Android devices, specifically for versions 11 through 14. These updates are crucial for safeguarding devices against potential exploits. Similarly, while the issue was addressed in Linux in 2020, only ChromeOS among the Linux-based operating systems enabled the fix by default. Other distributions like Ubuntu, Debian, Fedora, Gentoo, Arch, and Alpine did not, leaving them vulnerable​​."

"The vulnerability also affects macOS and iOS devices, especially when a Magic Keyboard is paired. Apple, having been notified by Newlin in August, confirmed the report but has yet to share a timeline for patching the vulnerability."