CVE-2026-85746MariaDB: Out-of-bound buffer write on in `ST_AsText` of nested GeometryCollections

Descripción

MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, ST_AsText can write beyond an allocated output buffer when converting deeply nested GeometryCollections because recursive WKT serialization does not account for bytes consumed or reserve sufficient space. A low-privileged remote attacker can submit a specially crafted GIS object to corrupt memory and potentially achieve code execution when combined with another vulnerability. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/MariaDB/server/security/advisories/GHSA-8fvj-c57c-pggx Vendor Advisory
• https://github.com/MariaDB/server/commit/5c04ca5524385356ff7cf84974a7d491974c1f85 Patch
• https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19 Release Notes
• https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28 Release Notes
• https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13 Release Notes
• https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9 Release Notes
• https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3 Release Notes
• https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2 Release Notes
• https://jira.mariadb.org/browse/MDEV-40329 Issue Tracking