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Check for CREATE privilege on the schema in CREATE STATISTICS.

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This omission allowed table owners to create statistics in any
schema, potentially leading to unexpected naming conflicts.  For
ALTER TABLE commands that require re-creating statistics objects,
skip this check in case the user has since lost CREATE on the
schema.  The addition of a second parameter to CreateStatistics()
breaks ABI compatibility, but we are unaware of any impacted
third-party code.

Reported-by: Jelte Fennema-Nio <postgres@jeltef.nl>
Author: Jelte Fennema-Nio <postgres@jeltef.nl>
Co-authored-by: Nathan Bossart <nathandbossart@gmail.com>
Reviewed-by: Noah Misch <noah@leadboat.com>
Reviewed-by: Álvaro Herrera <alvherre@kurilemu.de>
Security: CVE-2025-12817
Backpatch-through: 13
This commit is contained in:
Nathan Bossart
2025-11-10 09:00:00 -06:00
parent 7eb8fcad86
commit 00eb646ea4
6 changed files with 90 additions and 4 deletions
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2
src/backend/commands/tablecmds.c
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@@ -9680,7 +9680,7 @@ ATExecAddStatistics(AlteredTableInfo *tab, Relation rel,
/* The CreateStatsStmt has already been through transformStatsStmt */
Assert(stmt->transformed);
address = CreateStatistics(stmt);
address = CreateStatistics(stmt, !is_rebuild);
return address;
}