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APPLE-SA-2022-12-13-6 macOS Big Sur 11.7.2

macOS Big Sur 11.7.2 addresses the following issues.
Information about the security content is also available at
https://support.apple.com/HT213534.

BOM
Available for: macOS Big Sur
Impact: An app may bypass Gatekeeper checks
Description: A logic issue was addressed with improved checks.
CVE-2022-42821: Jonathan Bar Or of Microsoft

DriverKit
Available for: macOS Big Sur
Impact: An app may be able to execute arbitrary code with kernel
privileges
Description: The issue was addressed with improved memory handling.
CVE-2022-32942: Linus Henze of Pinauten GmbH (pinauten.de)

IOHIDFamily
Available for: macOS Big Sur
Impact: An app may be able to execute arbitrary code with kernel
privileges
Description: A race condition was addressed with improved state
handling.
CVE-2022-42864: Tommy Muir (@Muirey03)

Kernel
Available for: macOS Big Sur
Impact: An app may be able to execute arbitrary code with kernel
privileges
Description: A race condition was addressed with additional
validation.
CVE-2022-46689: Ian Beer of Google Project Zero

Kernel
Available for: macOS Big Sur
Impact: An app with root privileges may be able to execute arbitrary
code with kernel privileges
Description: The issue was addressed with improved memory handling.
CVE-2022-42845: Adam Doupé of ASU SEFCOM

Kernel
Available for: macOS Big Sur
Impact: A remote user may be able to cause kernel code execution
Description: The issue was addressed with improved memory handling.
CVE-2022-42842: pattern-f (@pattern_F_) of Ant Security Light-Year
Lab

libxml2
Available for: macOS Big Sur
Impact: A remote user may be able to cause unexpected app termination
or arbitrary code execution
Description: An integer overflow was addressed through improved input
validation.
CVE-2022-40303: Maddie Stone of Google Project Zero

libxml2
Available for: macOS Big Sur
Impact: A remote user may be able to cause unexpected app termination
or arbitrary code execution
Description: This issue was addressed with improved checks.
CVE-2022-40304: Ned Williamson and Nathan Wachholz of Google Project
Zero

ppp
Available for: macOS Big Sur
Impact: An app may be able to execute arbitrary code with kernel
privileges
Description: The issue was addressed with improved memory handling.
CVE-2022-42840: an anonymous researcher

xar
Available for: macOS Big Sur
Impact: Processing a maliciously crafted package may lead to
arbitrary code execution
Description: A type confusion issue was addressed with improved
checks.
CVE-2022-42841: Thijs Alkemade (@xnyhps) of Computest Sector 7

macOS Big Sur 11.7.2 may be obtained from the Mac App Store or
Apple's Software Downloads web site:
https://support.apple.com/downloads/
All information is also posted on the Apple Security Updates
web site: https://support.apple.com/en-us/HT201222.

This message is signed with Apple's Product Security PGP key,
and details are available at:
https://www.apple.com/support/security/pgp/
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