Bug 2558947

Summary: CVE-2026-83745 thrift: thrift: Denial of Service via excessive memory allocation in WebSocket transport [epel-all]
Product: [Fedora] Fedora EPEL Reporter: Vipul Nair <vinair>
Component: thriftAssignee: kkeithley
Status: ASSIGNED --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: epel10CC: ctubbsii, epel-packagers-sig, kkeithle, kkeithley
Target Milestone: ---Keywords: Security, SecurityTracking
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OS: Unspecified   
Whiteboard: {"flaws": ["62ec050b-521d-4072-b45b-acc48919b9ca"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:    
Bug Blocks: 2545142    

Description Vipul Nair 2026-10-22 13:21:17 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Memory allocation with excessive size value, Improper handling of length parameter inconsistency vulnerability in Apache Thrift 
nodejs and D lang bindings.

Both bindings' WebSocket server transports read the payload length out of the frame header and allocate that many bytes immediately, without checking that the bytes have arrived. A single ~14-byte frame therefore commits as much memory as it cares to declare -- measured at 513 MiB against the Node.js server and 2 GiB against the D transport -- and in the Node.js case the connection is left open afterwards, so the frame can simply be sent again.




This issue affects Apache Thrift before 0.25.0.



Users are recommended to upgrade to version 0.25.0, which fixes the issue.