CVE-2025-24201

An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in visionOS 2.3.2, iOS 18.3.2 and iPadOS 18.3.2, macOS Sequoia 15.3.2, Safari 18.3.1, watchOS 11.4, iPadOS 17.7.6, iOS 16.7.11 and iPadOS 16.7.11, iOS 15.8.4 and iPadOS 15.8.4. Maliciously crafted web content may be able to break out of Web Content sandbox. This is a supplementary fix for an attack that was blocked in iOS 17.2. (Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 17.2.).

A flaw was found in WebKitGTK. Processing malicious web content can trigger an out-of-bounds write due to improper checks to prevent unauthorized actions, causing a break out of Web Content sandbox.

This update for webkit2gtk3 fixes the following issues. Fixed unexpected process crash due to processing maliciously crafted web content. Fixed information disclosure via data cross-origin exfiltration due to a cookie management issue Move tiles rendering to worker threads when rendering with the GPU. Fixed preserve-3D intersection rendering. Added new function for creating Promise objects to JavaScripotCore GLib API. The MediaRecorder backend gained WebM support (requires at least GStreamer 1.24.9) and audio bitrate configuration support. Fixed invalid DPI-aware font size conversion. Bring back support for OpenType-SVG fonts using Skia SVG module. Add metadata to the PDF document generated for printing. Propagate the font’s computed locale to HarfBuzz. The GPU process build is now enabled for WebGL, but the web process is still used by default. The runtime flag UseGPUProcessForWebGL can be used to use the GPU process for WebGL.

Apple iOS, iPadOS, macOS, and other Apple products contain an out-of-bounds write vulnerability in WebKit that may allow maliciously crafted web content to break out of Web Content sandbox. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.