Bug 2572573 (CVE-2026-116317)

Summary: CVE-2026-116317 postgresql: postgresql: Arbitrary code execution via heap-based buffer overflow in ts_rank_cd()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: high    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in PostgreSQL. A heap-based buffer overflow in the text search ranking function, ts_rank_cd(), allows an authenticated database user to execute arbitrary code with the privileges of the operating system user running the database service. By supplying a malformed text search vector (tsvector) containing duplicate positions, an attacker can trigger memory corruption, resulting in arbitrary code execution or a denial of service (DoS).
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Description OSIDB Bzimport 2026-11-12 14:34:16 UTC
Heap-based buffer overflow in PostgreSQL ts_rank_cd() may allow a database user to execute arbitrary code as the operating system user running the database, via an invalid tsvector containing duplicate positions.  Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.