macOS Big Sur 11.5.1 fixes critical security vulnerability

Apple released last Wednesday macOS Big Sur 11.5, an update of the Mac operating system. The update includes a new podcast library tab in the Podcast app that shows shows you follow, fixes for music app players, bug fixes, and more. With the update of 07/26/21 and macOS 11.5.1, a security patch has arrived. Details about the fix are available in a support document.

The release notes for macOS Big Sur 11.5

Here are the notes regarding the update of macOS Big Sur 11.5 :

macOS Big Sur 11.5 includes the following enhancements for your Mac:

the Podcast Library tab allows you to choose to see all shows or only watched shows;

This release also fixes the following issues:

music may not update the number of plays and the last played date in your library;

smart cards may not work when connecting to Mac computers with M1 chip.

Apple also includes a number of security fixes, which you can read more about on the Apple’s security support page (for other macOS updates it is here). More precisely, macOS 11.5.1 fixes a major flaw that Apple says has been exploited in the wild. It is believed to be related to Pegasus spyware on iPhones.

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 has been resolved with better memory management.
CVE-2021-30807: an anonymous researcher.

The release comes a few days after Apple released the following security updates:

Before installing the update, you need to back up your Mac. This could be useful if you find that your Mac is having trouble updating your Mac and you need to restore your data.

When you are ready to install the update: