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Copy Fail – CVE-2026-31431 (copy.fail)

submitted 4 months ago by cyrano@piefed.social to c/selfhosted@lemmy.world

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cross-posted from: https://lemmy.bestiver.se/post/1076650

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[–] cyrano@piefed.social [S] 1 point 4 months ago (1 child)

Tested on Ubuntu 24.04. Security patching from Ubuntu does fix it. Scary vulnerability

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[–] cmnybo@discuss.tchncs.de 5 points 4 months ago (1 child)

It looks like the fix is just disabling the algif_aead kernel module. That prevented the proof of concept script from working on everything I tested it on. Hopefully they will get some kernel updates out soon.

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[–] TomAwezome@lemmy.world 3 points 4 months ago

They have shipped out an update mitigation for the issue. http://ubuntu.com/blog/copy-fail-vulnerability-fixes-available

sudo apt update && sudo apt upgrade

and after that, also do the steps listed on that page for running rmmod and grepping for the affected module unloaded

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lemmy:	0.19.20
mlmym (mschae):	26.3.4