Apple Releases macOS Big Sur 11.3.1 With Fixes for WebKit Security Issues

[MacRumors]

Alongside iOS 14.5.1 and watchOS 7.4.1, Apple today also released macOS Big Sur 11.3.1, which the company says "provides important security updates".

According to the full security notes for the release, it addresses a memory corruption issue and an integer overflow in WebKit that could both be exploited using maliciously crafted web content. Apple says it aware of a report that these issues may have been actively exploited, so users are advised to upgrade immediately.

Article Link: Apple Releases macOS Big Sur 11.3.1 With Fixes for WebKit Security Issues

 

[GigabitEthernet]

Will they ever fix AirPods audio switching? It is still broken

 

[BigMcGuire]

2.40GB here.

 

[Sasparilla]

Nice, get those security fixes out.

 

[sapbasis]

I don't see an 11.3.1 update, yet.

Edit: Of course... now I do.

 

[raywkh14]

Any people having problems with audio connected to external monitor? I have a LG monitor connected to a macbook pro 2018 model using a USB-C cable and whenever I start playing a video, there is always an initial silence for about 2 seconds. And this always happen after there is a silence for 10 seconds.

 

[5425642]

Don't see the update yet either... Hoping it get's here before work.

 

[tywebb13]

build number is 20E241

 

[Populus]

Don’t get me wrong, I’m glad Apple addressed a security flaw with a new update, but as others said on the iOS 14.5.1 post, didn’t Apple discover this over the two months of the beta? I made a clean install hoping 11.3 would last a while... I could have waited a week before making this clean install

 

[tywebb13]

Full installer is already available. You can get it with this link: http://swcdn.apple.com/content/down...93c0l9i1qbh4fuknli9wzglp/InstallAssistant.pkg

With the full installer, if you name a usb Untitled you can make a bootable usb installer for 11.3.1 with this command in Terminal:

sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled

 

[doboy]

Apple, shape up! Every recent updates have been followed up by .1 release about a week later. And more often then not, it’s due to something Apple screwed up and not security related.

 

[sirozha]

3.30 GB for me on the M1 MacBook Air. Really Apple? 3.3 GB for a Webkit bug?

 

[naughtybehavior86]

3.30 GB for me on the M1 MacBook Air. Really Apple? 3.3 GB for a Webkit bug?

I think they buried fixes for a lot of TB kernel panic issues.

 

[StevieD100]

Apple, shape up! Every recent updates have been followed up by .1 release about a week later.

The simple answer is not to install the release until a few weeks have elapsed.

 

[Mr. Dee]

Big Sur 11.3 appears to have corrupted my 4TB G-drive:

External Hard Disk Corrupted After updating to Big Sur 11.3 on M1

I doubt that this originates from software. The Knowledgebase article Apple Computers and Displays: Powering peripherals through USB contains some general guidelines and illustrates using System Profiler to provide information about the output (according to specifications) of a Macs USB ports...

forums.macrumors.com

I learned a big lesson. I am going to get the drive replaced under warranty, but will get a separate external drive just for my M1, because it looks like there are some serious issue with Big Sur and M1 Macs where it likes to corrupt external devices.

 

[Anthony Sullivan]

Do these small point updates really need to be gigabytes in size, take 50+ minutes to install (even on my Macs with SSDs), and push the OS build number? It's like installing a whole new version of macOS each time. Seems inefficient and likely to contribute to SSD wear.

 

[Lihp8270]

Big Sur 11.3 appears to have corrupted my 4TB G-drive:

External Hard Disk Corrupted After updating to Big Sur 11.3 on M1

I doubt that this originates from software. The Knowledgebase article Apple Computers and Displays: Powering peripherals through USB contains some general guidelines and illustrates using System Profiler to provide information about the output (according to specifications) of a Macs USB ports...

forums.macrumors.com

I learned a big lesson. I am going to get the drive replaced under warranty, but will get a separate external drive just for my M1, because it looks like there are some serious issue with Big Sur and M1 Macs where it likes to corrupt external devices.

Any other sources for your claims of the OS corrupting external drives other than citing your own post?

Your other post sounds more like a hardware problem.

 

[rodgui]

Strangely the item "Relocated Items" on my desktop is gone.

 

[DotCom2]

I got a notice right after updating that the "Amazon Music App" is dangerous and will damage my computer and that I should move it to the Trash! WTH! Since I never use it anyway, I did move it to the trash but WTH?

 

[lcseds]

And folks complain Windows has a lot of updates. Looking in the mirror.

 

[Quackers]

3.30GB on my M1 MBA and an hour and a quarter to download and install! Really? For a .1 update?
And another relocated items folder!
If it was alright on 11.3 why is it not alright on 11.3.1?

 

[BigMcGuire]

This update takes a long time so if you update over a lunch break, you'll be sweating it... <cough>.

 

[szw-mapple fan]

Will they ever fix AirPods audio switching? It is still broken

What Mac are you using? Working find for me on a M1 MacBook.

 

[munpip214]

Wow. Integer overflow?! That should be prevented from a low-level OS security protection. We looked at that in my 2009 hacking class. Wouldn't have thought we would have such a "basic" exploit today.

 

[Jerry Fritschle]

3.30 GB for me on the M1 MacBook Air. Really Apple? 3.3 GB for a Webkit bug?

Any changes to the Sealed System Volume appear to constrain the minimum size of a delta update.