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The options "StartSel", "StopSel" and "FragmentDelimiter" given by a caller of the SQL function ts_headline() have their lengths stored as int16. When providing values larger than PG_INT16_MAX, it was possible to overflow the length values stored, leading to incorrect behaviors in generateHeadline(), in most cases translating to a crash. Attempting to use values for these options larger than PG_INT16_MAX is now blocked. Some test cases are added to cover our tracks. Reported-by: Xint Code Author: Michael Paquier <michael@paquier.xyz> Backpatch-through: 14 Security: CVE-2026-6473
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. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.