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

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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".

macOS Big Sur Feature Purple
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.

Related Forum: macOS Big Sur

Top Rated Comments

A
Anthony Sullivan
64 months ago
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.
Score: 16 Votes (Like | Disagree)
S
sirozha
64 months ago
3.30 GB for me on the M1 MacBook Air. Really Apple? 3.3 GB for a Webkit bug?
Score: 12 Votes (Like | Disagree)
G
GigabitEthernet
64 months ago
Will they ever fix AirPods audio switching? It is still broken
Score: 10 Votes (Like | Disagree)
D
doboy
64 months ago
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.
Score: 8 Votes (Like | Disagree)
J
Jerry Fritschle
64 months ago

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.
Score: 5 Votes (Like | Disagree)
StevieD100 Avatar
StevieD100
64 months ago

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.
Score: 5 Votes (Like | Disagree)
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