# CVE-2024-27434: wifi: iwlwifi: mvm: don't set the MFP flag for the GTK

> A misconfiguration in the iwlwifi driver can cause firmware crashes when using TKIP with Management Frame Protection, leading to denial of service.

- **Severity:** High 7.1 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 17 May 2024
- **Updated:** 5 Aug 2026
- **Also known as:** BELL-CVE-2024-27434, DEBIAN-CVE-2024-27434, GHSA-v876-q68f-39fv, UBUNTU-CVE-2024-27434

## What is CVE-2024-27434?

CVE-2024-27434 is a high-severity denial of service vulnerability in Linux kernel, published on 17 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In the Linux kernel, the following vulnerability has been resolved:

wifi: iwlwifi: mvm: don't set the MFP flag for the GTK

The firmware doesn't need the MFP flag for the GTK, it can even make the
firmware crash. in case the AP is configured with: group cipher TKIP and
MFPC. We would send the GTK with cipher = TKIP and MFP which is of course
not possible.

## Which versions are affected by CVE-2024-27434?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2024-27434?

Apply the vendor's patch.

## Is CVE-2024-27434 being exploited?

There is no known exploitation of CVE-2024-27434 in the wild and no public exploit code.

## Other vulnerabilities in Linux kernel

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-27434 and fix it if it is affected.

What it is: CVE-2024-27434 is a high-severity denial of service vulnerability in Linux kernel, published on 17 May 2024. 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-2024-27434 in the wild and no public exploit code.

Affected product: Linux kernel. 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-2024-27434/ (Markdown: https://insights.sbomify.com/CVE-2024-27434/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-27434
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-27434
- OSV: https://osv.dev/vulnerability/CVE-2024-27434

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-27434/
Summaries are generated and may contain mistakes; the official description above is the record.