Bug 2379612 (CVE-2025-30403)

Summary: CVE-2025-30403 mvfst: mvfst heap buffer overflow
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A heap based buffer overflow vector has been discovered in mvfst. An attacker may be able to exploit this flaw to execute code in the context of the running process.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2379644, 2379645    
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Description OSIDB Bzimport 2025-07-11 19:01:26 UTC
A heap-buffer-overflow vulnerability is possible in mvfst via a specially crafted message during a QUIC session. This issue affects mvfst versions prior to v2025.07.07.00.