this post was submitted on 12 Jun 2026
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Arch Linux AUR Malware Campaign Hits Multiple User-Contributed Packages (linuxiac.com)
submitted 19 hours ago by Vittelius@feddit.org to c/linux@lemmy.ml
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Arch Linux’s AUR is experiencing a malware incident involving user-contributed packages with malicious commits that attempt to download npm-based payloads during installation. (...)

Arch users should not update AUR packages without review. Examine PKGBUILD diffs, check any new .install files, and be cautious if updates introduce npm commands or dependencies unrelated to the software.

Users who recently updated affected AUR packages should review package history, examine executed suspicious install scripts, and treat any unexpected npm-based installation behavior as a possible compromise.

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[–] placebo@lemmy.zip 4 points 16 hours ago (1 children)

But if you look at some of the packages, they explicitly added npm as a new dependency. It'd be much easier to sneak in a python script.

[–] lemmyvore@feddit.nl 8 points 16 hours ago (1 children)

AUR "packages" are just a recipe file that runs some commands that sources packages from somewhere else and builds them then puts them in the format required by the AUR package manager.

Normally it's a source tarball downloaded directly from the project's Git repo. But it can also fetch and install a binary package (for closed source software). Or it can install Node modules, or Python modules etc.

Point is, you can't inject a script directly in AUR itself. You could add the malicious code directly to the recipe file but it would be obvious. You could also download a zip with the malware directly, but it would also be obvious.

So what they do is add the malware to modules published on another platform, and they're downloaded indirectly, as a dependency of the Nth grade.

It's very hard to detect, you can't really notice this kind of attack with a glance at the recipe.

[–] placebo@lemmy.zip 1 points 10 hours ago

I see. Thanks for the explanation.