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APPLE-SA-2021-12-15-7 Safari 15.2

Safari 15.2 addresses the following issues.
Information about the security content is also available at
https://support.apple.com/HT212982.

WebKit
Available for: macOS Big Sur and macOS Catalina
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: A buffer overflow issue was addressed with improved
memory handling.
CVE-2021-30934: Dani Biro

WebKit
Available for: macOS Big Sur and macOS Catalina
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-2021-30936: Chijin Zhou of ShuiMuYuLin Ltd and Tsinghua
wingtecher lab
CVE-2021-30951: Pangu

WebKit
Available for: macOS Big Sur and macOS Catalina
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: An integer overflow was addressed with improved input
validation.
CVE-2021-30952: WeBin

WebKit
Available for: macOS Big Sur and macOS Catalina
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: A race condition was addressed with improved state
handling.
CVE-2021-30984: Kunlun Lab

WebKit
Available for: macOS Big Sur and macOS Catalina
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: An out-of-bounds read was addressed with improved bounds
checking.
CVE-2021-30953: VRIJ

WebKit
Available for: macOS Big Sur and macOS Catalina
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: A type confusion issue was addressed with improved
memory handling.
CVE-2021-30954: Kunlun Lab

Additional recognition

WebKit
We would like to acknowledge Jzhu, Peter Snyder of Brave, and Soroush
Karami for their assistance.


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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