Bug 2567708 (CVE-2026-122126)

Summary: CVE-2026-122126 resiprocate: resiprocate: Denial of service via heap buffer overflow in reTurn client
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in reSIProcate. This vulnerability allows a malicious server or an on-path network attacker to cause a denial of service (DoS) by crashing the reTurn client. By sending oversized network frames that exceed the allocated buffer size, an attacker triggers a heap-based buffer overflow that overwrites client memory and terminates the application.
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Description OSIDB Bzimport 2026-11-05 22:19:44 UTC 
reSIProcate reTurn client through 1.14.0 contains a heap buffer overflow in TurnTcpSocket::handleReadHeader(), which TurnTlsSocket inherits, that allows malicious TURN servers or on-path attackers to overwrite memory via oversized frame lengths. Attackers can send STUN or ChannelData frames declaring up to 65535 bytes, writing roughly 57 KB past the fixed 8192-byte mReadBuffer and crashing the client. Only the synchronous TCP and TLS client is affected; the asynchronous client (TurnAsyncSocket) and the reTurn server are not.