# CVE-2024-3567: Qemu-kvm: net: assertion failure in update_sctp_checksum()

> A malicious guest can crash QEMU via an assertion failure in SCTP checksum calculation, causing a denial of service.

- **Severity:** Medium 5.5 (`CVSS:3.1/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:** 10 Apr 2024
- **Updated:** 8 Nov 2025
- **Also known as:** AZL-43050, BELL-CVE-2024-3567, DEBIAN-CVE-2024-3567, GHSA-mqq7-33jf-2x53, UBUNTU-CVE-2024-3567

## What is CVE-2024-3567?

CVE-2024-3567 is a medium-severity denial of service vulnerability in Qemu Qemu, published on 10 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A flaw was found in QEMU. An assertion failure was present in the update_sctp_checksum() function in hw/net/net_tx_pkt.c when trying to calculate the checksum of a short-sized fragmented packet. This flaw allows a malicious guest to crash QEMU and cause a denial of service condition.

Weakness: CWE-617 (Reachable Assertion)

## Which versions are affected by CVE-2024-3567?

It affects 2 products.


Products: Qemu Qemu, Redhat Enterprise Linux.

## How do I fix CVE-2024-3567?

Apply the vendor's patch.

## Is CVE-2024-3567 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-3567 exists.

## Other vulnerabilities in Qemu Qemu

- [CVE-2022-36648](https://insights.sbomify.com/CVE-2022-36648/): Null dereference in n/a (critical 10.0)
- [CVE-2015-8556](https://insights.sbomify.com/CVE-2015-8556/): Race condition in n/a (critical 10.0)
- [CVE-2009-3616](https://insights.sbomify.com/CVE-2009-3616/): Use after free in n/a (critical 9.9)
- [CVE-2019-12928](https://insights.sbomify.com/CVE-2019-12928/): Command injection in n/a (critical 9.8)
- [CVE-2019-12929](https://insights.sbomify.com/CVE-2019-12929/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-3567 and fix it if it is affected.

What it is: CVE-2024-3567 is a medium-severity denial of service vulnerability in Qemu Qemu, published on 10 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-3567 exists.

Affected product: Qemu Qemu. 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-2024-3567/ (Markdown: https://insights.sbomify.com/CVE-2024-3567/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-3567
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-3567
- OSV: https://osv.dev/vulnerability/CVE-2024-3567

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-3567/
Summaries are generated and may contain mistakes; the official description above is the record.