Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| ruby-lang / Ruby | affected 4.0.0 before 4.0.5 |
CWE
CWE-362
References
- https://hackerone.com/reports/3607434
- https://www.ruby-lang.org/en/news/2026/05/20/getaddrinfo-cve-2026-46727/
ADP enrichment
No English description supplied.
No references supplied.