CVE-2017-7980: Canonical Ubuntu Linux

High severity, CVSS 7.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Heap-based buffer overflow in Cirrus CLGD 54xx VGA Emulator in Quick Emulator (Qemu) 2.8 and earlier allows local guest OS users to execute arbitrary code or cause a denial of service (crash) via vectors related to a VNC client updating its display after a VGA operation.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 16.10 only; version 17.04 only
• Debian Debian Linux: version 8.0 only
• Qemu Qemu: up to and including 2.8
• Red Hat Enterprise Linux Desktop: version 6.0 only; version 7.0 only
• Red Hat Enterprise Linux Server: version 6.0 only; version 7.0 only
• Red Hat Enterprise Linux Server Aus: version 7.3 only; version 7.4 only; version 7.6 only
• Red Hat Enterprise Linux Server Eus: version 7.3 only; version 7.4 only; version 7.5 only; version 7.6 only
• Red Hat Enterprise Linux Server Tus: version 7.3 only; version 7.6 only
• Red Hat Enterprise Linux Workstation: version 6.0 only; version 7.0 only
• Red Hat Openstack: version 6.0 only; version 7.0 only; version 8 only; version 9 only; version 10 only; version 5.0 only
• Red Hat Virtualization: version 3.0 only

Published 2017-07-25. Last modified 2026-06-17.