CVE-2020-12768: Canonical Ubuntu Linux

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

An issue was discovered in the Linux kernel before 5.6. svm_cpu_uninit in arch/x86/kvm/svm.c has a memory leak, aka CID-d80b64ff297e. NOTE: third parties dispute this issue because it's a one-time leak at the boot, the size is negligible, and it can't be triggered at will

Affected products

• Canonical Ubuntu Linux: version 18.04 only; version 19.10 only; version 20.04 only
• Debian Debian Linux: version 10.0 only
• Linux Linux Kernel: before 5.6 (fixed in 5.6)

Published 2020-05-09. Last modified 2026-06-17.