Bug 2542962

Summary: CVE-2026-84895 proxygen: proxygen: Denial of Service via use-after-free during session closure [fedora-all]
Product: [Fedora] Fedora Reporter: TEJ RATHI <trathi>
Component: proxygenAssignee: Michel Lind <michel>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: michel
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["c7372047-edab-4d6c-b3e9-35d82ecf6763"]}
Fixed In Version: Doc Type: ---
Doc Text:
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2542692    

Description TEJ RATHI 2026-09-29 06:25:24 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.

In proxygen from v2026.04.06.00 until v2026.09.28.00, QuicWtSession::closeSession accesses its member fields after calling the base QuicWtSessionBase::closeSession method. The base method notifies the session handler, which may release the last reference to the session and destroy it.