Bug 2554206 (CVE-2026-85746) - CVE-2026-85746 mariadb: MariaDB: Out-of-bound buffer write on in `ST_AsText` of nested GeometryCollections
Summary: CVE-2026-85746 mariadb: MariaDB: Out-of-bound buffer write on in `ST_AsText` ...
Keywords:
Status: NEW
Alias: CVE-2026-85746
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2559702 2559703 2559705
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-16 16:42 UTC by OSIDB Bzimport
Modified: 2026-10-23 13:19 UTC (History)
9 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-10-16 16:42:06 UTC 
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.
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