CVE-2020-12768

MEDIUM

Linux Kernel < 5.6 - Memory Leak in KVM SVM CPU Uninitialization

Title source: llm
STIX 2.1

Description

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

References (7)

Core 7
Core References
Mailing List, Patch, Vendor Advisory x_refsource_confirm
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6
Issue Tracking, Third Party Advisory x_refsource_misc
https://bugzilla.suse.com/show_bug.cgi?id=1171736#c3
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2020/dsa-4699
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4413-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4411-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4412-1/

Scores

CVSS v3 5.5
EPSS 0.0006
EPSS Percentile 17.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-401
Status published
Products (5)
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 19.10
canonical/ubuntu_linux 20.04
debian/debian_linux 10.0
linux/linux_kernel < 5.6
Published May 09, 2020
Tracked Since Feb 18, 2026