CVE-2019-20382: Canonical Ubuntu Linux

Low severity, CVSS 3.5. EPSS: 0.9% chance of exploitation in the next 30 days.

QEMU 4.1.0 has a memory leak in zrle_compress_data in ui/vnc-enc-zrle.c during a VNC disconnect operation because libz is misused, resulting in a situation where memory allocated in deflateInit2 is not freed in deflateEnd.

Affected products

• Canonical Ubuntu Linux: version 16.04 only; version 18.04 only; version 19.10 only; version 20.04 only
• Debian Debian Linux: version 9.0 only; version 10.0 only
• Opensuse Leap: version 15.1 only
• Qemu Qemu: version 4.1.0 only

Published 2020-03-05. Last modified 2026-06-17.