Apple today released macOS Big Sur 11.5.1, a security update to its macOS Big Sur operating system, which was released in fall 2020. The minor update comes one week after the release of macOS Big Sur 11.5
The macOS Big Sur 11.5.1 update is free and can be downloaded on all compatible Macs using the Software Update section of System Preferences.
Apple says macOS Big Sur 11.5.1 brings important security updates and is recommended for all users.
macOS Big Sur 11.5.1 provides important security updates and is recommended for all users.
For detailed information about the security content of this update, please visit: https://support.apple.com/kb/HT201222
The above-linked security document details the security fix.
IOMobileFrameBuffer
Available for: macOS Big Sur
Impact: An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.
Description: A memory corruption issue was addressed with improved memory handling.
CVE-2021-30807: an anonymous researcher
