-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

APPLE-SA-2023-04-07-1 iOS 16.4.1 and iPadOS 16.4.1

iOS 16.4.1 and iPadOS 16.4.1 addresses the following issues.
Information about the security content is also available at
https://support.apple.com/HT213720.

IOSurfaceAccelerator
Available for: iPhone 8 and later, iPad Pro (all models), iPad Air
3rd generation and later, iPad 5th generation and later, and iPad
mini 5th generation and later
Impact: An app 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: An out-of-bounds write issue was addressed with improved
input validation.
CVE-2023-28206: Clément Lecigne of Google's Threat Analysis Group and
Donncha Ó Cearbhaill of Amnesty International’s Security Lab

WebKit
Available for: iPhone 8 and later, iPad Pro (all models), iPad Air
3rd generation and later, iPad 5th generation and later, and iPad
mini 5th generation and later
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution. Apple is aware of a report that this issue
may have been actively exploited.
Description: A use after free issue was addressed with improved
memory management.
WebKit Bugzilla: 254797
CVE-2023-28205: Clément Lecigne of Google's Threat Analysis Group and
Donncha Ó Cearbhaill of Amnesty International’s Security Lab

This update is available through iTunes and Software Update on your
iOS device, and will not appear in your computer's Software Update
application, or in the Apple Downloads site. Make sure you have an
Internet connection and have installed the latest version of iTunes
from https://www.apple.com/itunes/  iTunes and Software Update on the
device will automatically check Apple's update server on its weekly
schedule. When an update is detected, it is downloaded and the option
to be installed is presented to the user when the iOS device is
docked. We recommend applying the update immediately if possible.
Selecting Don't Install will present the option the next time you
connect your iOS device.  The automatic update process may take up to
a week depending on the day that iTunes or the device checks for
updates. You may manually obtain the update via the Check for Updates
button within iTunes, or the Software Update on your device.  To
check that the iPhone, iPod touch, or iPad has been updated:  *
Navigate to Settings * Select General * Select About. The version
after applying this update will be "iOS 16.4.1 and iPadOS 16.4.1".
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/
-----BEGIN PGP SIGNATURE-----
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=83T6
-----END PGP SIGNATURE-----