# CVE-2019-19590: Use after free in n/a

> Remote attackers can trigger a use-after-free via crafted input in radare2, potentially leading to arbitrary code execution or application crashes.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 5 Dec 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-67rp-x49w-2277, UBUNTU-CVE-2019-19590

## What is CVE-2019-19590?

CVE-2019-19590 is a high-severity use after free vulnerability in Radare Radare2, published on 5 Dec 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

In radare2 through 4.0, there is an integer overflow for the variable new_token_size in the function r_asm_massemble at libr/asm/asm.c. This integer overflow will result in a Use-After-Free for the buffer tokens, which can be filled with arbitrary malicious data after the free. This allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via crafted input.

Weakness: CWE-416 (Use After Free), CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2019-19590?

It affects 1 product.


Products: Radare Radare2.

## How do I fix CVE-2019-19590?

Upgrade to a fixed version.

## Is CVE-2019-19590 being exploited?

There is no known exploitation of CVE-2019-19590 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-2019-19590 and fix it if it is affected.

What it is: CVE-2019-19590 is a high-severity use after free vulnerability in Radare Radare2, published on 5 Dec 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-19590 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-2019-19590/ (Markdown: https://insights.sbomify.com/CVE-2019-19590/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-19590
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-19590
- OSV: https://osv.dev/vulnerability/CVE-2019-19590

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-19590/
Summaries are generated and may contain mistakes; the official description above is the record.