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APPLE-SA-2022-01-26-3 macOS Big Sur 11.6.3

macOS Big Sur 11.6.3 addresses the following issues. 
Information about the security content is also available at 
https://support.apple.com/HT213055.

Audio
Available for: macOS Big Sur
Impact: Parsing a maliciously crafted audio file may lead to
disclosure of user information
Description: A buffer overflow issue was addressed with improved
memory handling.
CVE-2021-30960: JunDong Xie of Ant Security Light-Year Lab

iCloud
Available for: macOS Big Sur
Impact: An application may be able to access a user's files
Description: An issue existed within the path validation logic for
symlinks. This issue was addressed with improved path sanitization.
CVE-2022-22585: Zhipeng Huo (@R3dF09) of Tencent Security Xuanwu Lab
(https://xlab.tencent.com)

IOMobileFrameBuffer
Available for: macOS Big Sur
Impact: A malicious 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
input validation.
CVE-2022-22587: an anonymous researcher, Meysam Firouzi (@R00tkitSMM)
of MBition - Mercedes-Benz Innovation Lab, Siddharth Aeri
(@b1n4r1b01)

Kernel
Available for: macOS Big Sur
Impact: A malicious application may be able to execute arbitrary code
with kernel privileges
Description: A buffer overflow issue was addressed with improved
memory handling.
CVE-2022-22593: Peter Nguyễn Vũ Hoàng of STAR Labs

Model I/O
Available for: macOS Big Sur
Impact: Processing a maliciously crafted STL file may lead to
unexpected application termination or arbitrary code execution
Description: An information disclosure issue was addressed with
improved state management.
CVE-2022-22579: Mickey Jin (@patch1t) of Trend Micro

PackageKit
Available for: macOS Big Sur
Impact: An application may be able to access restricted files
Description: A permissions issue was addressed with improved
validation.
CVE-2022-22583: an anonymous researcher, Ron Hass (@ronhass7) of
Perception Point, Mickey Jin (@patch1t)

TCC
Available for: macOS Big Sur
Impact: A malicious application may be able to bypass certain Privacy
preferences
Description: This issue was addressed with improved checks.
CVE-2021-30972: Xuxiang Yang (@another1024), Zhipeng Huo (@R3dF09),
and Yuebin Sun (@yuebinsun2020) of Tencent Security Xuanwu Lab
(xlab.tencent.com), Wojciech Reguła (@_r3ggi), jhftss (@patch1t),
Csaba Fitzl (@theevilbit) of Offensive Security

Additional recognition

Kernel
We would like to acknowledge Tao Huang for their assistance.

Metal
We would like to acknowledge Tao Huang for their assistance.

PackageKit
We would like to acknowledge Mickey Jin (@patch1t) of Trend Micro for
their assistance.

Installation note:

This update may be obtained from the Mac App Store

Information will also be posted to the Apple Security Updates
web site: https://support.apple.com/kb/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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