# CVE-2019-3882: Denial of service in kernel

> A local attacker with device ownership can exhaust system memory via the vfio interface, causing a denial of service.

- **Severity:** Medium 4.7 (`CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 24 Apr 2019
- **Updated:** 4 Aug 2024
- **Also known as:** DEBIAN-CVE-2019-3882, GHSA-xmpq-jcv6-q64p, UBUNTU-CVE-2019-3882

## What is CVE-2019-3882?

CVE-2019-3882 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 24 Apr 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official 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.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2019-3882?

It affects 13 products.


Products: Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Linux kernel, Netapp Active Iq Unified Manager for Vmware Vsphere, Netapp Cn1610 Firmware, Netapp Hci Management Node, Netapp Snapprotect, Netapp Solidfire, Netapp Storage Replication Adapter for Clustered Data Ontap for Vmware Vsphere, Netapp Vasa Provider for Clustered Data Ontap, Netapp Virtual Storage Console for Vmware Vsphere, Opensuse Leap.

## How do I fix CVE-2019-3882?

Apply the vendor's patch.

## Is CVE-2019-3882 being exploited?

There is no known exploitation of CVE-2019-3882 in the wild and no public exploit code.

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-3882 and fix it if it is affected.

What it is: CVE-2019-3882 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 24 Apr 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-3882 in the wild and no public exploit code.

Affected product: Canonical Ubuntu Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2019-3882/ (Markdown: https://insights.sbomify.com/CVE-2019-3882/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-3882
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-3882
- OSV: https://osv.dev/vulnerability/CVE-2019-3882

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-3882/
Summaries are generated and may contain mistakes; the official description above is the record.