Bug 2559705 - CVE-2026-85746 mariadb12.3: MariaDB: Out-of-bound buffer write on in `ST_AsText` of nested GeometryCollections [fedora-all]
Summary: CVE-2026-85746 mariadb12.3: MariaDB: Out-of-bound buffer write on in `ST_AsTe...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: mariadb12.3
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Michal Schorm
QA Contact:
URL:
Whiteboard: {"flaws": ["7b18c1f9-c67b-42d5-b253-a...
Depends On:
Blocks: CVE-2026-85746
TreeView+ depends on / blocked
 
Reported: 2026-10-23 13:19 UTC by Lukas Javorsky
Modified: 2026-10-23 13:19 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


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Description Lukas Javorsky 2026-10-23 13:19:04 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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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