# CVE-2016-0651: Denial of service in n/a

> Local users can cause a denial of service in MySQL via unspecified vectors related to the Optimizer.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/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:** 21 Apr 2016
- **Updated:** 15 Oct 2024
- **Also known as:** GHSA-f28w-g82h-6rwv, UBUNTU-CVE-2016-0651

## What is CVE-2016-0651?

CVE-2016-0651 is a medium-severity denial of service vulnerability in Mariadb Mariadb, published on 21 Apr 2016. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Unspecified vulnerability in Oracle MySQL 5.5.46 and earlier allows local users to affect availability via vectors related to Optimizer.

## Which versions are affected by CVE-2016-0651?

It affects 15 products.


Products: Mariadb Mariadb, Opensuse Leap, Opensuse Opensuse, Oracle Mysql, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Tus, Redhat Enterprise Linux Workstation, Suse Linux Enterprise Debuginfo, Suse Linux Enterprise Desktop, Suse Linux Enterprise Server, Suse Linux Enterprise Software Development Kit, Suse Linux Enterprise Workstation Extension.

## How do I fix CVE-2016-0651?

Upgrade to a fixed version.

## Is CVE-2016-0651 being exploited?

There is no known exploitation of CVE-2016-0651 in the wild and no public exploit code.

## Other vulnerabilities in Mariadb Mariadb

- [CVE-2026-49261](https://insights.sbomify.com/CVE-2026-49261/): MariaDB server has unsafe parameter handling in `wsrep_notify_cmd` (critical 10.0)
- [CVE-2026-85746](https://insights.sbomify.com/CVE-2026-85746/): MariaDB: Out-of-bound buffer write on in `ST_AsText` of nested GeometryCollections (critical 9.9)
- [CVE-2026-85748](https://insights.sbomify.com/CVE-2026-85748/): MariaDB: Use-after-free with a large number of SYS_REFCURSOR's (critical 9.9)
- [CVE-2026-92262](https://insights.sbomify.com/CVE-2026-92262/): MariaDB: Numerous issues caused by historical #mysql50# tablename encoding bypass. (critical 9.9)
- [CVE-2023-26785](https://insights.sbomify.com/CVE-2023-26785/): Code injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-0651 and fix it if it is affected.

What it is: CVE-2016-0651 is a medium-severity denial of service vulnerability in Mariadb Mariadb, published on 21 Apr 2016. 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-2016-0651 in the wild and no public exploit code.

Affected product: Mariadb Mariadb. 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-2016-0651/ (Markdown: https://insights.sbomify.com/CVE-2016-0651/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-0651
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-0651
- OSV: https://osv.dev/vulnerability/CVE-2016-0651

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-0651/
Summaries are generated and may contain mistakes; the official description above is the record.