Apple has rolled out some updates to its older operating systems, with iOS and iPadOS 15.7.9, macOS Monterey 12.6.9, and macOS Big Sur 11.7.10 now available for installation to fix a security issue.
Apple occasionally issues updates to its previously-available operating systems for a number of reasons, including enabling compatibility with other devices and accessories, and security updates. These typically are used by older iPhone, iPad, and Mac models that are not able to run later current-gen operating system releases.
The updates can be installed using existing update systems in each operating system, such as under Settings then General then Software Update under iOS and iPadOS.
These patches all include a security update for CVE-2023-41064, where a "maliciously crafted image may lead to arbitrary code execution" via ImageIO. The patch addresses a buffer overflow issue with improved memory handling.
Apple says it is "aware of a report that this issue may have been actively exploited."
CVE-2023-41064's discovery is credited to The Citizen Lab at The University of Torontos Munk School