This is a list of the Monterey 12.2 security updates not present in the Big Sur 11.6.3 security update. It's unclear if Big Sur is vulnerable to these or not. If Big Sur is though then they appear unpatched at the moment.
AMD Kernel
Available for: macOS Monterey
Impact: A malicious application may be able to execute arbitrary code with kernel privileges
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2022-22586: an anonymous researcher
ColorSync
Available for: macOS Monterey
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: macOS Monterey
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
Intel Graphics Driver
Available for: macOS Monterey
Impact: A malicious application may be able to execute arbitrary code with kernel privileges
Description: A memory corruption issue was addressed with improved memory handling.
CVE-2022-22591: Antonio Zekic (@antoniozekic) of Diverto
WebKit
Available for: macOS Monterey
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
Available for: macOS Monterey
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: macOS Monterey
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 Storage
Available for: macOS Monterey
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