# CVE-2022-1507: Null dereference in hpjansson/chafa

> Attackers can cause a denial of service via a crafted input file due to a NULL pointer dereference in the chafa image conversion library.

- **Severity:** Medium 5.5 (`CVSS:3.0/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:** 27 Apr 2022
- **Updated:** 3 Aug 2024
- **Also known as:** DEBIAN-CVE-2022-1507, GHSA-p7m9-59wp-jx9r, JLSEC-2026-1089, UBUNTU-CVE-2022-1507, openSUSE-SU-2022:10025-1

## What is CVE-2022-1507?

CVE-2022-1507 is a medium-severity vulnerability in Fedoraproject Fedora, published on 27 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

chafa: NULL Pointer Dereference in function gif_internal_decode_frame at libnsgif.c:599 allows attackers to cause a denial of service (crash) via a crafted input file. in GitHub repository hpjansson/chafa prior to 1.10.2. chafa: NULL Pointer Dereference in function gif_internal_decode_frame at libnsgif.c:599 allows attackers to cause a denial of service (crash) via a crafted input file.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2022-1507?

It affects 2 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `chafa` | SUSE:Package Hub 15 SP3 | All versions | 1.4.1-bp153.2.3.1 |
| `chafa` | openSUSE:Leap 15.3 | All versions | 1.4.1-bp153.2.3.1 |

Products: Chafa Project Chafa, Fedoraproject Fedora.

## How do I fix CVE-2022-1507?

Upgrade to a fixed version.

## Is CVE-2022-1507 being exploited?

There is no known exploitation of CVE-2022-1507 in the wild and no public exploit code.

## Other vulnerabilities in Fedoraproject Fedora

- [CVE-2022-2301](https://insights.sbomify.com/CVE-2022-2301/): Buffer Over-read in hpjansson/chafa (medium 5.5)
- [CVE-2022-2061](https://insights.sbomify.com/CVE-2022-2061/): Heap-based Buffer Overflow in hpjansson/chafa (low 2.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-1507 and fix it if it is affected.

What it is: CVE-2022-1507 is a medium-severity vulnerability in Fedoraproject Fedora, published on 27 Apr 2022. 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-2022-1507 in the wild and no public exploit code.

Affected product: Fedoraproject Fedora. 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-2022-1507/ (Markdown: https://insights.sbomify.com/CVE-2022-1507/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-1507
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-1507
- OSV: https://osv.dev/vulnerability/CVE-2022-1507

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-1507/
Summaries are generated and may contain mistakes; the official description above is the record.