Intel Memory Access Design Flaw Already Addressed by Apple in macOS 10.13.2
A serious design flaw and security vulnerability discovered in Intel CPUs has reportedly already been partially addressed by Apple in the recent macOS 10.13.2 update, which was released to the public on December 6.
According to developer Alex Ionescu, Apple introduced a fix in macOS 10.13.2, with additional tweaks set to be introduced in macOS 10.13.3, currently in beta testing. AppleInsider also says that it has heard from "multiple sources within Apple" that updates made in macOS 10.13.2 have mitigated "most" security concerns associated with the KPTI vulnerability.
Publicized yesterday,
the design flaw in Intel chips allows normal user programs to see some of the contents of the protected kernel memory, potentially giving hackers and malicious programs access to sensitive information like passwords, login keys, and more.
Full details on the vulnerability continue to be unavailable and under embargo, so it's not yet clear just how serious it is, but fixing it involves isolating the kernel's memory from user processes using Kernel Page Table Isolation at the OS level. Implementing Kernel Page Table Isolation could cause a performance hit on some machines.
According to The Register, which first shared details on the vulnerability, Windows and Linux machines will see a 5 to 30 percent slowdown once a fix is in place. It appears Macs may not be hit as heavily, as no noticeable performance slowdowns have been reported since the launch of macOS 10.13.2.
Ionescu also says that performance drop on a system with PCID (Process-Context Identifiers), available on most modern Macs, is "minimal," so most users may not see an impact on day-to-day Mac usage.
Popular Stories
Apple today introduced its first two physical products of 2026: a second-generation AirTag and the Black Unity Connection Braided Solo Loop for the Apple Watch.
Read our coverage of each announcement to learn more:Apple Unveils New AirTag With Longer Range, Louder Speaker, and More
Apple Introduces New Black Unity Apple Watch BandBoth the new AirTag and the Black Unity Connection Braided...
Alongside iOS 26.2.1, Apple today released an updated version of iOS 12 for devices that are still running that operating system update, eight years after the software was first released.
iOS 12.5.8 is available for the iPhone 5s and the iPhone 6, meaning Apple is continuing to support these devices for 13 and 12 years after launch, respectively. The iPhone 5s came out in September 2013,...
Apple today introduced the second-generation AirTag, with key features including longer range for tracking items and a louder speaker.
For those who are not familiar, the AirTag is a small accessory that you can attach to your backpack, keys, or other items. Then, you can track the location of those items in the Find My app on the iPhone, iPad, Mac, Apple Watch, and iCloud.com.
The new...
Update: Apple Creator Studio is now available.
Apple Creator Studio launches this Wednesday, January 28. The all-in-one subscription provides access to the Final Cut Pro, Logic Pro, Pixelmator Pro, Motion, Compressor, and MainStage apps, with U.S. pricing set at $12.99 per month or $129 per year.
A subscription to Apple Creator Studio also unlocks "intelligent features" and "premium...
2026 promises to be yet another busy year for Apple, with the company rumored to be planning more than 20 product announcements over the coming months.
Beyond the usual updates to iPhones, iPads, Macs, and Apple Watches, Apple is expected to release its all-new smart home hub, which was reportedly delayed until the more personalized version of Siri is ready. Other unique products rumored for ...
