Apple issues macOS Big Sur 11.2.1 with SUDO & MacBook Pro charging fixes

Posted:
in macOS edited February 2021
Apple has released an update for macOS Big Sur bringing it to version 11.2.1, an update that solves problems with recharging some MacBook Pro models, and fixes to the Sudo vulnerability.




The update is available to users manually by opening System Preferences then selecting Software Update. It will also be installed automatically on systems for users who enabled that setting.

Apple issues the update a week after its main macOS Big Sur 11.2 update, with the version numbering indicating it is mainly a bug fix and performance release.

The main item in Apple's release notes for the update is that it includes a fix for some 2016 and 2017 MacBook Pro models. Some users found their MacBook Pro failed to recharge the battery, something the update is likely to repair.

The update also plugs a hole in macOS for Sudo, a flaw that allowed attackers to take control of a Mac using an exploit. The issue existed for ten years before being documented in January.

Apple has also released supplemental updates for macOS Catalina and macOS Mojave, closing the same Sudo security hole.

Apple is already beta-testing macOS Big Sur 11.3, the next main update to the operating system.

Update: Updated February 9 at 2:40pm Eastern Time with Sudo vulnerability fix and supplemental update information.

Comments

  • Reply 1 of 10
    How about wi-fi? Does it fix the continuous disconnects from my network that none of my other devices are experiencing?
  • Reply 2 of 10
    Mike WuertheleMike Wuerthele Posts: 6,899administrator
    How about wi-fi? Does it fix the continuous disconnects from my network that none of my other devices are experiencing?
    The release notes say nothing about wi-fi, and we aren't experiencing what you are in this regard, so we can't test it either.
    pulseimagesmwhiteRayz2016
  • Reply 3 of 10
    JFC_PAJFC_PA Posts: 938member
    I’m usually an early OS upgrade adapter but something about this one keeps my upgrade-hesitancy going for moving on from Catalina for my fully loaded out 2019 16” MacBook Pro. 
  • Reply 4 of 10
    magman1979magman1979 Posts: 1,299member
    How about wi-fi? Does it fix the continuous disconnects from my network that none of my other devices are experiencing?
    Reset your SMC, should fix that issue
  • Reply 5 of 10
    elijahgelijahg Posts: 2,789member
    2.5gb for a fix just to 444kb sudo?? I feel for those on metered or slow connections... Glad that Apple got it out quickly though.
    edited February 2021
  • Reply 6 of 10
    elijahg said:
    2.5gb for a fix just to 444kb sudo?? I feel for those on metered or slow connections... Glad that Apple got it out quickly though.
    The other 2.49GB contains the Terms Of Service and a Steve's Jobs Easter Egg.
    marklarkelijahgbulk001
  • Reply 7 of 10
    lkrupplkrupp Posts: 10,557member
    Also released was a supplemental update to Catalina 10.15.7 for the same two issues.
  • Reply 8 of 10
    JFC_PA said:
    I’m usually an early OS upgrade adapter but something about this one keeps my upgrade-hesitancy going for moving on from Catalina for my fully loaded out 2019 16” MacBook Pro. 
    Why?  The vulnerabilities patched in this Big Sur update exist in Catalina, too.

    An update for Catalina was released at the same time.
  • Reply 9 of 10
    Did other Unix and Linux push out the update too?
  • Reply 10 of 10
    11.2.1 does not fix dock icon display problem discussed at:


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