0ebf896f44
The special case here for estimating conditions involving a ctid column failed to check that the RHS constant is of type tid. While that'd always be true for the built-in operators that reference this selectivity estimator, a maliciously constructed operator could provide a user-controlled Datum value that would get interpreted as an ItemPointer pointer. That at least risks SIGSEGV, and perhaps with a bit of sweat it could be used for server memory disclosure. Reported-by: Hcamael <baiyjrh@gmail.com> Author: Tom Lane <tgl@sss.pgh.pa.us> Reviewed-by: Noah Misch <noah@leadboat.com> Backpatch-through: 14 Security: CVE-2026-14668
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/17/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/17/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.