# CVE-2014-9906: Use after free in n/a

> Attackers can cause crashes or execute arbitrary code via a use-after-free flaw in the DBD::mysql Perl module when server connections are lost.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 19 Aug 2016
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2014-9906, GHSA-676f-4267-c5c3, UBUNTU-CVE-2014-9906

## What is CVE-2014-9906?

CVE-2014-9906 is a critical use after free vulnerability in Debian Debian Linux, published on 19 Aug 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Use-after-free vulnerability in DBD::mysql before 4.029 allows attackers to cause a denial of service (program crash) or possibly execute arbitrary code via vectors related to a lost server connection.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2014-9906?

It affects 2 products.


Products: Dbd-Mysql Project Dbd-Mysql, Debian Debian Linux.

## How do I fix CVE-2014-9906?

Upgrade to a fixed version.

## Is CVE-2014-9906 being exploited?

There is no known exploitation of CVE-2014-9906 in the wild and no public exploit code.

## Other vulnerabilities in Debian Debian Linux

- [CVE-2017-10788](https://insights.sbomify.com/CVE-2017-10788/): Use after free in n/a (critical 9.8)
- [CVE-2015-8949](https://insights.sbomify.com/CVE-2015-8949/): Use after free in n/a (critical 9.8)
- [CVE-2016-1251](https://insights.sbomify.com/CVE-2016-1251/): Use after free in DBD::mysql before 4.041 (high 8.1)
- [CVE-2016-1246](https://insights.sbomify.com/CVE-2016-1246/): Memory corruption in n/a (high 7.5)
- [CVE-2017-10789](https://insights.sbomify.com/CVE-2017-10789/): Security feature bypass in n/a (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2014-9906 and fix it if it is affected.

What it is: CVE-2014-9906 is a critical use after free vulnerability in Debian Debian Linux, published on 19 Aug 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2014-9906 in the wild and no public exploit code.

Affected product: Debian Debian 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-2014-9906/ (Markdown: https://insights.sbomify.com/CVE-2014-9906/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2014-9906
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2014-9906
- OSV: https://osv.dev/vulnerability/CVE-2014-9906

---
From sbomify Insights: https://insights.sbomify.com/CVE-2014-9906/
Summaries are generated and may contain mistakes; the official description above is the record.