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Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. rustls-webpki (rustls/webpki) versions 0.101.0 through 0.103.11 and 0.104.0-alpha releases before 0.104.0-alpha.6 ignore X.509 name constraints that apply to URI names, causing such constraints to be accepted rather than enforced. Because name constraints are restrictions on otherwise properly issued certificates, the flaw is only reachable after successful signature verification and requires a misissued certificate to exploit; the library also provides no API for asserting URI names, and URI name constraints are otherwise unimplemented. Versions 0.103.12 and 0.104.0-alpha.6 reject URI name constraints unconditionally.
The rustls-webpki crate is a transitive dependency pulled in by reqwest → rustls, both gated behind the optional microvm Cargo feature. This feature is not enabled in the Fedora build; the spec uses %cargo_build with no --features microvm. The vendored source includes stubs for these deps but they are not compiled or linked. Even if the microvm feature were enabled, the URI Name Constraint bypass requires a misissued X.509 certificate with URI SANs from a trusted CA. arapuca's only use of TLS is fetching VM images from trusted registries. Closing as NOTABUG, as it is not affected.