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3 advisories

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Concurrent Ruby: ReadWriteLock allows wrong-thread write release and stray read-release counter corruption Low
CVE-2026-54906 was published for concurrent-ruby (RubyGems) Jun 19, 2026
pranjalithakur Credited to pranjalithakur
Concurrent Ruby: `ReentrantReadWriteLock` read-count overflow grants a write lock without exclusivity Low
CVE-2026-54905 was published for concurrent-ruby (RubyGems) Jun 19, 2026
pranjalithakur Credited to pranjalithakur
Concurrent Ruby : `AtomicReference#update` livelocks when the stored value is `Float::NAN` High
CVE-2026-54904 was published for concurrent-ruby (RubyGems) Jun 19, 2026
pranjalithakur Credited to pranjalithakur
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