CVE-2019-19332

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-01-09 · updated 2026-06-17
Weakness: CWE-787

Description

An out-of-bounds memory write issue was found in the Linux Kernel, version 3.13 through 5.4, in the way the Linux kernel's KVM hypervisor handled the 'KVM_GET_EMULATED_CPUID' ioctl(2) request to get CPUID features emulated by the KVM hypervisor. A user or process able to access the '/dev/kvm' device could use this flaw to crash the system, resulting in a denial of service.

Affected products

Linux kernel: from 3.13 through 5.4
Red Hat Enterprise Linux: 7.0, 8.0

References

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19332
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
https://lore.kernel.org/kvm/000000000000ea5ec20598d90e50%40google.com/
https://security.netapp.com/advisory/ntap-20200204-0002/
https://usn.ubuntu.com/4254-1/
https://usn.ubuntu.com/4254-2/
https://usn.ubuntu.com/4258-1/
https://usn.ubuntu.com/4284-1/
https://usn.ubuntu.com/4287-1/

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