On 3/30/24 12:00, Jonathan Billings wrote:
On Mar 30, 2024, at 13:16, Patrick O'Callaghan pocallaghan@gmail.com wrote: AFAIK this only applies to Rawhide and the (as yet unreleased) F40, both of which I assume will be patched ASAP.
Thankfully, it looks like the version that was released in the Fedora 40 beta repos (v5.6.0) was compiled with a configure flag that prevented the backdoor from running, because the malicious code unintentionally caused Fedora’s QA process to reject the initial updated package (if I understand correctly). Upstream released a new version that allowed Fedora to build with the feature, it just didn’t make it in the beta freeze. Complete coincidence. Fedora has since reverted the xz packages to v5.4.6 in 40, so if you’re running the beta, you can `dnf downgrade xz*’ to get the older version, if it doesn’t automatically downgrade.
The epoch was bumped, so an upgrade will get the "older" version. Don't try to downgrade.