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backdoor in upstream xz/liblzma leading to ssh server compromise
(www.openwall.com)
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Gentoo just reverted back to the last tar signed by another author than the one seeming responsible for the backdoor. The person has been on the project for years, so one should keep up to date and possibly revert even further back than just from 5.6.*. Gentoo just reverted to 5.4.2.
Just updated on void and saw the same thing