CVE-2026-73508 (GCVE-0-2026-73508)
Vulnerability from cvelistv5
Published
2026-08-13 14:27
Modified
2026-08-13 17:52
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-772 - Missing Release of Resource after Effective Lifetime
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, io.netty.handler.codec.dns.AbstractDnsRecord, io.netty.handler.codec.dns.DefaultDnsRecordDecoder.decodeRecord(), and io.netty.handler.codec.dns.DnsCodecUtil.decompressDomainName() failed to release retained or newly allocated ByteBuf objects when IDN.toASCII() or encodeDomainName() rejected a malformed domain name, allowing unauthenticated remote DNS packets to leak direct memory incrementally until denial of service. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
References
Impacted products
Vendor Product Version
netty netty Version: < 4.1.136.Final
Version: >= 4.2.0.Final, < 4.2.16.Final
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