Bug 2556277 (CVE-2025-71436)

Summary: CVE-2025-71436 raptor2: raptor2: arbitrary code execution via heap-based buffer overflow in language tag handling
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: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in raptor2. The library improperly handles language tag lengths when parsing RDF (Resource Description Framework) documents, truncating lengths that exceed 255 bytes. A remote attacker can exploit this vulnerability by supplying a specially crafted document with an overly long language tag to trigger a heap-based buffer overflow. This flaw may allow an attacker to execute arbitrary code or crash the application, causing a Denial of Service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-10-20 15:54:10 UTC
Raptor RDF Syntax Library from 2.0.15 through 2.0.16 contains a heap-based buffer overflow vulnerability in raptor_new_term_from_counted_literal() caused by truncating language tag length to an unsigned char. Attackers can supply Turtle, TriG, N-Triples or N-Quads documents with language tags of 256 bytes or longer to corrupt heap memory, crash applications, and possibly execute code.