# CVE-2024-43847: wifi: ath12k: fix invalid memory access while processing fragmented packets

> Invalid memory access in the ath12k WiFi driver during fragmented packet processing can cause system crashes or potential code execution.

- **Severity:** High 8.8 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/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:** Not needed
- **Fix available:** Yes
- **Published:** 17 Aug 2024
- **Updated:** 5 Aug 2026
- **Also known as:** BELL-CVE-2024-43847, DEBIAN-CVE-2024-43847, GHSA-x8hg-ghpc-gxw6, UBUNTU-CVE-2024-43847

## What is CVE-2024-43847?

CVE-2024-43847 is a high-severity memory corruption vulnerability in Linux kernel, published on 17 Aug 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: ath12k: fix invalid memory access while processing fragmented packets

The monitor ring and the reo reinject ring share the same ring mask index.
When the driver receives an interrupt for the reo reinject ring, the
monitor ring is also processed, leading to invalid memory access. Since
monitor support is not yet enabled in ath12k, the ring mask for the monitor
ring should be removed.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00209-QCAHKSWPL_SILICONZ-1

## Which versions are affected by CVE-2024-43847?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2024-43847?

Apply the vendor's patch.

## Is CVE-2024-43847 being exploited?

There is no known exploitation of CVE-2024-43847 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-2024-43847 and fix it if it is affected.

What it is: CVE-2024-43847 is a high-severity memory corruption vulnerability in Linux kernel, published on 17 Aug 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-2024-43847 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-2024-43847/ (Markdown: https://insights.sbomify.com/CVE-2024-43847/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-43847
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-43847
- OSV: https://osv.dev/vulnerability/CVE-2024-43847

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-43847/
Summaries are generated and may contain mistakes; the official description above is the record.