CVE-2015-2643: Canonical Ubuntu Linux

Medium severity, CVSS 4.0. EPSS: 4.3% chance of exploitation in the next 30 days.

Unspecified vulnerability in Oracle MySQL Server 5.5.43 and earlier and 5.6.24 and earlier allows remote authenticated users to affect availability via unknown vectors related to Server : Optimizer.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 14.10 only; version 15.04 only
• Debian Debian Linux: version 7.0 only; version 8.0 only
• MariaDB MariaDB: from 5.5.0, before 5.5.44 (fixed in 5.5.44); from 10.0.0, before 10.0.20 (fixed in 10.0.20)
• Opensuse Opensuse: version 13.1 only; version 13.2 only
• Oracle MySQL: from 5.5.0, up to and including 5.5.43; from 5.6.0, up to and including 5.6.24
• Oracle Solaris: version 11.3 only
• Red Hat Enterprise Linux Desktop: version 5.0 only; version 7.0 only
• Red Hat Enterprise Linux Eus: version 7.1 only; version 7.2 only; version 7.3 only; version 7.4 only; version 7.5 only; version 7.6 only; …
• Red Hat Enterprise Linux Server: version 5.0 only; version 7.0 only
• Red Hat Enterprise Linux Server Aus: version 7.3 only; version 7.4 only; version 7.6 only; version 7.7 only
• Red Hat Enterprise Linux Server Tus: version 7.3 only; version 7.6 only; version 7.7 only
• Red Hat Enterprise Linux Workstation: version 5.0 only; version 7.0 only

Published 2015-07-16. Last modified 2026-06-17.