CVE-2019-11046: Canonical Ubuntu Linux

Medium severity, CVSS 5.3. EPSS: 4.1% chance of exploitation in the next 30 days.

In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0, PHP bcmath extension functions on some systems, including Windows, can be tricked into reading beyond the allocated space by supplying it with string containing characters that are identified as numeric by the OS but aren't ASCII numbers. This can read to disclosure of the content of some memory locations.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 18.04 only; version 19.04 only; version 19.10 only
• Debian Debian Linux: version 8.0 only; version 9.0 only; version 10.0 only
• Fedoraproject Fedora: version 30 only; version 31 only
• Opensuse Leap: version 15.1 only
• PHP PHP: from 7.2.0, up to and including 7.2.26; from 7.3.0, up to and including 7.3.13; version 7.4.0 only
• Tenable Security Center: before 5.19.0 (fixed in 5.19.0)

Published 2019-12-23. Last modified 2026-08-17.