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pgp_pub_decrypt_bytea() was missing a safeguard for the session key length read from the message data, that can be given in input of pgp_pub_decrypt_bytea(). This can result in the possibility of a buffer overflow for the session key data, when the length specified is longer than PGP_MAX_KEY, which is the maximum size of the buffer where the session data is copied to. A script able to rebuild the message and key data that can trigger the overflow is included in this commit, based on some contents provided by the reporter, heavily editted by me. A SQL test is added, based on the data generated by the script. Reported-by: Team Xint Code as part of zeroday.cloud Author: Michael Paquier <michael@paquier.xyz> Reviewed-by: Noah Misch <noah@leadboat.com> Security: CVE-2026-2005 Backpatch-through: 14
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/.