CVE-2026-54904 - concurrent-ruby: `AtomicReference#update` livelocks when the stored value is `Float::NAN`
CVE ID :CVE-2026-54904 Published : June 24, 2026, 3:44 p.m. | 5 hours, 26 minutes ago Description :concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::AtomicReference#update can enter a permanent busy retry loop when the current value is Float::NAN. The issue...