# CVE-2016-9034: Memory corruption in SmartOS

> A buffer overflow in the Hyprlofs file system allows local attackers to escalate privileges via a crafted ioctl call.

- **Severity:** High 7.0 (`CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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:** No
- **Published:** 14 Dec 2016
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-w6pc-m3rh-gpq7

## What is CVE-2016-9034?

CVE-2016-9034 is a high-severity memory corruption vulnerability in Joyent SmartOS, published on 14 Dec 2016. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An exploitable buffer overflow exists in the Joyent SmartOS 20161110T013148Z Hyprlofs file system. The vulnerability is present in the Ioctl system call with the command HYPRLOFS_ADD_ENTRIES when dealing with 32-bit file systems. An attacker can craft an input that can cause a buffer overflow in the nm variable leading to an out of bounds memory access and could result in potential privilege escalation. This vulnerability is distinct from CVE-2016-9032.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2016-9034?

It affects 1 product.


Products: Joyent Smartos.

## How do I fix CVE-2016-9034?

No fix has been published for CVE-2016-9034 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-9034 being exploited?

There is no known exploitation of CVE-2016-9034 in the wild and no public exploit code.

## Other vulnerabilities in Joyent SmartOS

- [CVE-2018-1166](https://insights.sbomify.com/CVE-2018-1166/): Use after free in Joyent SmartOS (high 7.8)
- [CVE-2016-8733](https://insights.sbomify.com/CVE-2016-8733/): Integer overflow in SmartOS (high 7.8)
- [CVE-2016-9031](https://insights.sbomify.com/CVE-2016-9031/): Integer overflow in SmartOS (high 7.8)
- [CVE-2018-1171](https://insights.sbomify.com/CVE-2018-1171/): Memory corruption in Joyent SmartOS (high 7.0)
- [CVE-2018-1165](https://insights.sbomify.com/CVE-2018-1165/): Memory corruption in Joyent SmartOS (high 7.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-9034 and fix it if it is affected.

What it is: CVE-2016-9034 is a high-severity memory corruption vulnerability in Joyent SmartOS, published on 14 Dec 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-2016-9034 in the wild and no public exploit code.

Affected product: Joyent SmartOS. 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-2016-9034/ (Markdown: https://insights.sbomify.com/CVE-2016-9034/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-9034
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-9034
- OSV: https://osv.dev/vulnerability/CVE-2016-9034

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-9034/
Summaries are generated and may contain mistakes; the official description above is the record.