# CVE-2026-22780: Rizin has a heap overflow on mach0_chained_fixups.c

> Attackers can trigger a heap overflow in Rizin by providing a malicious Mach-O file, potentially leading to code execution or crashes.

- **Severity:** Medium 4.4 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L`)
- **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:** 2 Feb 2026
- **Updated:** 3 Feb 2026
- **Also known as:** GHSA-f3v7-xhmj-9cjj, openSUSE-SU-2026:10141-1

## What is CVE-2026-22780?

CVE-2026-22780 is a medium-severity memory corruption vulnerability in rizinorg rizin, published on 2 Feb 2026. 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

Rizin is a UNIX-like reverse engineering framework and command-line toolset. Prior to 0.8.2, a heap overflow can be exploited when a malicious mach0 file, having bogus entries for the dyld chained segments, is parsed by rizin. This vulnerability is fixed in 0.8.2.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2026-22780?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `rizin` | openSUSE:Tumbleweed | All versions | 0.8.2-1.1 |

Products: Rizin Rizin.

## How do I fix CVE-2026-22780?

Upgrade to a fixed version.

## Is CVE-2026-22780 being exploited?

There is no known exploitation of CVE-2026-22780 in the wild and no public exploit code.

## Other vulnerabilities in rizinorg rizin

- [CVE-2024-31668](https://insights.sbomify.com/CVE-2024-31668/): rizin before v0.6.3 is vulnerable to Improper Neutralization of Special Elements via meta_set function in librz/analysis/meta. (critical 9.1)
- [CVE-2023-40022](https://insights.sbomify.com/CVE-2023-40022/): Rizin vulnerable to Integer Overflow in C++ demangler logic (high 7.8)
- [CVE-2021-3674](https://insights.sbomify.com/CVE-2021-3674/): Memory corruption in rizin (high 7.8)
- [CVE-2023-27590](https://insights.sbomify.com/CVE-2023-27590/): Rizin has stack-based buffer overflow when parsing GDB registers profile files (high 7.8)
- [CVE-2022-36039](https://insights.sbomify.com/CVE-2022-36039/): Out-of-bounds write when parsing DEX files in Rizin (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-22780 and fix it if it is affected.

What it is: CVE-2026-22780 is a medium-severity memory corruption vulnerability in rizinorg rizin, published on 2 Feb 2026. 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-2026-22780 in the wild and no public exploit code.

Affected product: rizinorg rizin. 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-2026-22780/ (Markdown: https://insights.sbomify.com/CVE-2026-22780/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-22780
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-22780
- OSV: https://osv.dev/vulnerability/CVE-2026-22780

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-22780/
Summaries are generated and may contain mistakes; the official description above is the record.