Bug 2572534 (CVE-2026-116310)

Summary: CVE-2026-116310 postgresql: postgresql: Information disclosure via use-after-free in COPY FROM error reporting
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in PostgreSQL. An authenticated database user can trigger a use-after-free condition—where the application accesses memory after it has been released—during COPY FROM error reporting by supplying an input row following an ignored data conversion error. This issue allows the user to read portions of server memory, leading to unauthorized information disclosure.
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Description OSIDB Bzimport 2026-11-12 14:31:46 UTC
Use after free in PostgreSQL COPY FROM error reporting allows a database user to disclose portions of server memory, via a longer input row following an ignored or nullified conversion error.  file_fdw reaches the same code path in affected version 18.  Within major versions 17-18, minor versions before PostgreSQL 18.7 and 17.12 are affected.  Versions before PostgreSQL 17 are unaffected.