Threats Tagged 'cve-2026-46727'
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Threats Tagged 'cve-2026-46727'
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A race condition vulnerability in Ruby 4 versions before 4.0.5 allows a remote attacker to cause a use-after-free in the pthread-based getaddrinfo timeout handler. This can lead to a crash of the Ruby process when calling Addrinfo.getaddrinfo with a timeout or Socket.tcp with a resolv_timeout. Exploitation requires delaying DNS responses near the user-specified timeout, potentially via a malicious DNS server or resolver. Memory corruption exploitation is theoretically possible. A patch is available in Ruby 4.0.5. Join the discussion | GCVE Database | 05/27/2026, 08:57:36 UTC Added: 09/08/2026, 12:55:31 UTC |
0 An issue was discovered in Ruby 4 before 4.0.5. A race condition leading to a use-after-free in the pthread-based getaddrinfo timeout handler (rb_getaddrinfo in ext/socket/raddrinfo.c) allows a remote attacker who can delay DNS responses near the user-specified timeout to crash a Ruby process that calls Addrinfo.getaddrinfo(..., timeout:) or Socket.tcp(..., resolv_timeout:). Memory-corruption-based exploitation is theoretically possible. The attack could, for example, be carried out through a crafted authoritative DNS server or recursive resolver. Join the discussion | CVE Database V5 | 05/22/2026, 00:00:00 UTC Added: 05/22/2026, 17:59:48 UTC |
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