# CVE-2016-10129: Null dereference in n/a

> Remote attackers can cause a denial of service in libgit2 via an empty packet line in the Git Smart Protocol.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 24 Mar 2017
- **Updated:** 6 Aug 2024
- **Also known as:** ALPINE-CVE-2016-10129, DEBIAN-CVE-2016-10129, GHSA-7gh2-q8m8-26r9

## What is CVE-2016-10129?

CVE-2016-10129 is a high-severity vulnerability in n/a, published on 24 Mar 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Git Smart Protocol support in libgit2 before 0.24.6 and 0.25.x before 0.25.1 allows remote attackers to cause a denial of service (NULL pointer dereference) via an empty packet line.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2016-10129?

It affects 1 product.


Products: Libgit2 Project Libgit2.

## How do I fix CVE-2016-10129?

Upgrade to a fixed version.

## Is CVE-2016-10129 being exploited?

There is no known exploitation of CVE-2016-10129 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2016-10128](https://insights.sbomify.com/CVE-2016-10128/): Memory corruption in n/a (critical 9.8)
- [CVE-2016-10130](https://insights.sbomify.com/CVE-2016-10130/): Security feature bypass in n/a (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-10129 and fix it if it is affected.

What it is: CVE-2016-10129 is a high-severity vulnerability in n/a, published on 24 Mar 2017. 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-2016-10129 in the wild and no public exploit code.

Affected product: n/a. 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-2016-10129/ (Markdown: https://insights.sbomify.com/CVE-2016-10129/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-10129
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-10129
- OSV: https://osv.dev/vulnerability/CVE-2016-10129

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-10129/
Summaries are generated and may contain mistakes; the official description above is the record.