CVE-2026-85745

NameCVE-2026-85745
DescriptionMariaDB 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_Area reads beyond the allocated buffer when processing invalid WKB for a MultiPolygon because the multi-polygon parser advances past a nested geometry header without first verifying enough input remains. A low-privileged remote attacker can supply malformed spatial data to disclose memory useful for bypassing ASLR as part of a multi-vulnerability chain. 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
mariadb (PTS)bookworm1:10.11.18-0+deb12u1vulnerable
bookworm (security)1:10.11.19-0+deb12u1vulnerable
trixie1:11.8.6-0+deb13u1vulnerable
forky1:11.8.9+ds-2fixed
sid1:11.8.9+ds-4fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
mariadbsource(unstable)1:11.8.9+ds-1

Notes

https://github.com/MariaDB/server/security/advisories/GHSA-p7v9-24h4-mch8
https://jira.mariadb.org/browse/MDEV-40328
Fixed by: https://github.com/MariaDB/server/commit/2bf355e361db85153fdfba7b8a0f0d114d6a26ce (mariadb-13.1.1, mariadb-13.0.2, mariadb-12.3.3, mariadb-11.8.9, mariadb-11.4.13, mariadb-10.11.19, mariadb-10.6.28)

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