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APPLE-SA-2022-01-26-6 watchOS 8.4

watchOS 8.4 addresses the following issues. 
Information about the security content is also available at 
https://support.apple.com/HT213059.

ColorSync
Available for: Apple Watch Series 3 and later
Impact: Processing a maliciously crafted file may lead to arbitrary
code execution
Description: A memory corruption issue was addressed with improved
validation.
CVE-2022-22584: Mickey Jin (@patch1t) of Trend Micro

Crash Reporter
Available for: Apple Watch Series 3 and later
Impact: A malicious application may be able to gain root privileges
Description: A logic issue was addressed with improved validation.
CVE-2022-22578: an anonymous researcher

iCloud
Available for: Apple Watch Series 3 and later
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)

Kernel
Available for: Apple Watch Series 3 and later
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

WebKit
Available for: Apple Watch Series 3 and later
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: A use after free issue was addressed with improved
memory management.
CVE-2022-22590: Toan Pham from Team Orca of Sea Security
(security.sea.com)

WebKit
Available for: Apple Watch Series 3 and later
Impact: Processing maliciously crafted web content may prevent
Content Security Policy from being enforced
Description: A logic issue was addressed with improved state
management.
CVE-2022-22592: Prakash (@1lastBr3ath)

WebKit
Available for: Apple Watch Series 3 and later
Impact: Processing a maliciously crafted mail message may lead to
running arbitrary javascript
Description: A validation issue was addressed with improved input
sanitization.
CVE-2022-22589: Heige of KnownSec 404 Team (knownsec.com) and Bo Qu
of Palo Alto Networks (paloaltonetworks.com)

WebKit Storage
Available for: Apple Watch Series 3 and later
Impact: A website may be able to track sensitive user information
Description: A cross-origin issue in the IndexDB API was addressed
with improved input validation.
CVE-2022-22594: Martin Bajanik of FingerprintJS

Additional recognition

WebKit
We would like to acknowledge Prakash (@1lastBr3ath) for their
assistance.

Installation note:

Instructions on how to update your Apple Watch software are
available at https://support.apple.com/kb/HT204641

To check the version on your Apple Watch, open the Apple Watch app
on your iPhone and select "My Watch > General > About".

Alternatively, on your watch, select "My Watch > General > About".

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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