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Linux 13140
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Debian 3919
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Concurrent Ruby
CRITICAL 9.8
CVE-2026-54906
concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReadWriteLock#release_write_lock does not verify that the calling…
Fix: 1.3.7+
Fix from $2,300
2026-06-24
Concurrent Ruby
HIGH 7.5
CVE-2026-54904
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…
Fix: 1.3.7+
Fix from $1,950
2026-06-24
Concurrent Ruby
MEDIUM 5.5
CVE-2026-54905
concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReentrantReadWriteLock can incorrectly grant a write lock after o…
Fix: 1.3.7+
Fix from $1,600
2026-06-24