On Sat, Mar 30 2024 at 09:37:44 AM +00:00:00, Richard W.M. Jones <rjo...@redhat.com> wrote:
In the xz case this wouldn't have been enough, it turns out we would
also have to delete m4/build-to-host.m4, which then autoreconf
regenerates.  I don't fully understand why that is.

I agree that running autoreconf on our packages makes sense to start doing. Still, to avoid this backdoored m4 file, we would have needed to stop using release tarballs altogether and switch to using git tags directly instead. That would at least force the malicious attacker to commit their code to version control, making it slightly harder to hide the attack.

Michael

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