# CVE-2022-1237: Improper Validation of Array Index in radareorg/radare2

> An attacker can trigger a heap buffer overflow in radare2 via improper array index validation, potentially leading to code execution or denial of service.

- **Severity:** High 7.6 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 6 Apr 2022
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-4mjq-hx99-8pp5, UBUNTU-CVE-2022-1237

## What is CVE-2022-1237?

CVE-2022-1237 is a high-severity memory corruption vulnerability in Radare Radare2, published on 6 Apr 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Improper Validation of Array Index in GitHub repository radareorg/radare2 prior to 5.6.8. This vulnerability is heap overflow and may be exploitable. For more general description of heap buffer overflow, see [CWE](https://cwe.mitre.org/data/definitions/122.html).

Weakness: CWE-129 (Improper Validation of Array Index)

## Which versions are affected by CVE-2022-1237?

It affects 1 product.


Products: Radare Radare2.

## How do I fix CVE-2022-1237?

Upgrade to a fixed version.

## Is CVE-2022-1237 being exploited?

There is no known exploitation of CVE-2022-1237 in the wild and no public exploit code.

## Other vulnerabilities in Radare Radare2

- [CVE-2025-1864](https://insights.sbomify.com/CVE-2025-1864/): Buffer Overflow and Potential Code Execution in Radare2 (critical 10.0)
- [CVE-2025-1744](https://insights.sbomify.com/CVE-2025-1744/): Out-of-bounds Write in radare2 (critical 10.0)
- [CVE-2021-32494](https://insights.sbomify.com/CVE-2021-32494/): Denial of service in radare2 (critical 10.0)
- [CVE-2021-32495](https://insights.sbomify.com/CVE-2021-32495/): Use after free in radare2 (critical 10.0)
- [CVE-2024-29646](https://insights.sbomify.com/CVE-2024-29646/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-1237 and fix it if it is affected.

What it is: CVE-2022-1237 is a high-severity memory corruption vulnerability in Radare Radare2, published on 6 Apr 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2022-1237 in the wild and no public exploit code.

Affected product: Radare Radare2. 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-2022-1237/ (Markdown: https://insights.sbomify.com/CVE-2022-1237/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-1237
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-1237
- OSV: https://osv.dev/vulnerability/CVE-2022-1237

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-1237/
Summaries are generated and may contain mistakes; the official description above is the record.