# CVE-2019-19063: Denial of service in n/a

> Attackers can cause a denial of service via memory leaks in the Linux kernel's Realtek USB wireless driver.

- **Severity:** Medium 4.6 (`CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 18 Nov 2019
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2019-19063, GHSA-r9m9-7j24-222x, UBUNTU-CVE-2019-19063

## What is CVE-2019-19063?

CVE-2019-19063 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 18 Nov 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Two memory leaks in the rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c in the Linux kernel through 5.3.11 allow attackers to cause a denial of service (memory consumption), aka CID-3f9361695113.

Weakness: CWE-401 (Missing Release of Memory after Effective Lifetime)

## Which versions are affected by CVE-2019-19063?

It affects 18 products.


Products: Broadcom Brocade Fabric Operating System Firmware, Canonical Ubuntu Linux, Fedoraproject Fedora, Linux kernel, Netapp Active Iq Unified Manager, Netapp Aff Baseboard Management Controller, Netapp Cloud Backup, Netapp Data Availability Services, Netapp E-Series Santricity Os Controller, Netapp Fas\/Aff Baseboard Management Controller, Netapp Hci Baseboard Management Controller, Netapp Hci Compute Node Firmware, Netapp Solidfire\, Enterprise Sds \& Hci Storage Node, Netapp Solidfire \& Hci Management Node, Netapp Solidfire Baseboard Management Controller Firmware, Netapp Steelstore Cloud Integrated Storage, Opensuse Leap, Oracle Sd-Wan Edge.

## How do I fix CVE-2019-19063?

Apply the vendor's patch.

## Is CVE-2019-19063 being exploited?

There is no known exploitation of CVE-2019-19063 in the wild and no public exploit code.

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2023-27534](https://insights.sbomify.com/CVE-2023-27534/): Path traversal in https://github.com/curl/curl (high 8.8)
- [CVE-2021-4197](https://insights.sbomify.com/CVE-2021-4197/): Privilege escalation in kernel (high 7.8)
- [CVE-2023-27538](https://insights.sbomify.com/CVE-2023-27538/): Auth bypass in https://github.com/curl/curl (high 7.7)
- [CVE-2021-27218](https://insights.sbomify.com/CVE-2021-27218/): Integer overflow in n/a (high 7.5)
- [CVE-2021-27219](https://insights.sbomify.com/CVE-2021-27219/): Integer overflow in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-19063 and fix it if it is affected.

What it is: CVE-2019-19063 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 18 Nov 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-2019-19063 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-2019-19063/ (Markdown: https://insights.sbomify.com/CVE-2019-19063/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-19063
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-19063
- OSV: https://osv.dev/vulnerability/CVE-2019-19063

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-19063/
Summaries are generated and may contain mistakes; the official description above is the record.