Monday, July 22, 2019

macOS 10.14.6 and Xcode 10.3

The macOS 10.14.6 Combo update is now available.

Xcode 10.3 is in the Mac App Store, but it’s not yet available for direct download. In fact, the download page is currently directing me to check the system status, which of course shows all green.

Update (2019-07-23): The Xcode direct download is now available. The release notes still show only a single bug fix, so it’s not clear why the release is Xcode 10.3 rather than 10.2.2.

Dave DeLong:

One interesting note: Today I downloaded both Windows 10 and Xcode 10.3.

Windows 10 is 4.6GB.

Xcode 10.3 6.0GB


Howard Oakley:

First and foremost, it brings new system support for “Expansion Slots”, which are surely for the new Mac Pro model which is due to ship in the next few weeks. This confirms that its initial macOS install will be Mojave 10.14.6 rather than Catalina.


Further updates, which Apple doesn’t appear to have covered in its release notes, are across most software supporting Bluetooth, even its preference pane, and in Photos, which has changes in its iCloud support as well. There have been many updates across the various components for Notes.

Update (2019-07-25): Howard Oakley:

The latest news on this week’s macOS updates is that the Mojave update to 10.14.6 does appear ‘safe’, but the two security updates 2019-004 to Sierra and High Sierra remain unavailable, and shouldn’t be attempted until Apple replaces them.

The problems appear to be in the BridgeOS update, which is specific to Macs with T1 or T2 chips. The version of BridgeOS or iBridge, 16.16.6568.0.0, which ships with these updates appears to work correctly in the 10.14.6 update, but can cause problems with sleep and wake in the Sierra and High Sierra Security Updates 2019-004.

Update (2019-08-06): Howard Oakley:

Apple has just released macOS Mojave 10.14.6 Supplemental Update, which it says addresses problems in some Macs when waking from sleep. This is slightly less than 1 GB in size.

Although the release refers to security notes, none are yet available.

Howard Oakley:

It’s not unusual for Apple to fluff a significant macOS update, but it’s been a while since one went as badly wrong as Mojave 10.14.6 and its accompanying security updates.


Over this period, Apple has published three press releases. None of them concerns problems with these updates, nor explains why so many recent MacBook Pros were suffering kernel panics. As Apple doesn’t provide a list of new support notes, it’s almost impossible to discover whether it was mentioned in one, but I have been unable to locate any mention of the update saga, or warning to those MacBook Pro users that Apple had identified a problem.

Update (2019-08-29): Mr. Macintosh:

Apple has now released two Supplemental updates for macOS Mojave 10.14.6. The first macOS Mojave 10.14.6 Supplemental Update #1 (18G87) was released on August 1st. You can take a look at what was included inside the first Supplemental Update in the link below. The second one, which was released today is called macOS Mojave 10.14.6 Supplemental Update #2 (18G95).

See also: Howard Oakley.

Update (2019-09-27): Howard Oakley:

Apple has just released macOS 10.14.6 Supplemental Update 2 (which is in fact the third Supplemental Update to 10.14.6).


Description: An out-of-bounds read was addressed with improved input validation.

CVE-2019-8641: Samuel Groß and Natalie Silvanovich of Google Project Zero

Rob Griffiths:

Below the break is a table showing all major releases of macOS (previously Mac OS X) from the public beta through the latest public version, which is macOS 10.14.6 Supplemental Update 3, as of September 26th, 2019—the 126th release in total.

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