Bug 2477440 (CVE-2026-6575)

Summary: CVE-2026-6575 postgresql: PostgreSQL: Information disclosure via buffer over-read in pg_restore_attribute_stats()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dschmidt, erezende, jlanda, kshier, rhel-process-autobot, simaishi, smcdonal, stcannon, teagle, watson-tool-maintainers, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in PostgreSQL. This buffer over-read vulnerability in the `pg_restore_attribute_stats()` function allows a table maintainer to infer memory values. By providing array values of unmatched length, a malicious table maintainer can cause query planning to read past the end of an array, leading to information disclosure.
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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: 2487460, 2487461, 2487462, 2487464    
Bug Blocks:    

Description OSIDB Bzimport 2026-05-14 14:01:45 UTC 
Buffer over-read in PostgreSQL function pg_restore_attribute_stats() accepts array values of unmatched length, which causes query planning to read past end of one array.  This allows a table maintainer to infer memory values past that array end.  Within major version 18, minor versions before PostgreSQL 18.4 are affected.  Versions before PostgreSQL 18 are unaffected.