# CVE-2025-68729: wifi: ath12k: Fix MSDU buffer types handling in RX error path

> A flaw in the ath12k Wi-Fi driver causes kernel crashes and memory leaks when processing specific error packets, requiring a patch to prevent denial of service.

- **Severity:** Not scored
- **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:** 24 Dec 2025
- **Updated:** 21 Oct 2026
- **Also known as:** BELL-CVE-2025-68729, DEBIAN-CVE-2025-68729, GHSA-7x6p-f8qc-r9hq, ROOT-OS-DEBIAN-13-CVE-2025-68729, ROOT-OS-UBUNTU-2404-CVE-2025-68729, UBUNTU-CVE-2025-68729

## What is CVE-2025-68729?

CVE-2025-68729 is a memory corruption vulnerability in Linux, published on 24 Dec 2025. 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 MSDU buffer types handling in RX error path

Currently, packets received on the REO exception ring from
unassociated peers are of MSDU buffer type, while the driver expects
link descriptor type packets. These packets are not parsed further due
to a return check on packet type in ath12k_hal_desc_reo_parse_err(),
but the associated skb is not freed. This may lead to kernel
crashes and buffer leaks.

Hence to fix, update the RX error handler to explicitly drop
MSDU buffer type packets received on the REO exception ring.
This prevents further processing of invalid packets and ensures
stability in the RX error handling path.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1

## Which versions are affected by CVE-2025-68729?


## How do I fix CVE-2025-68729?

Apply the vendor's patch.

## Is CVE-2025-68729 being exploited?

There is no known exploitation of CVE-2025-68729 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-68729 and fix it if it is affected.

What it is: CVE-2025-68729 is a memory corruption vulnerability in Linux, published on 24 Dec 2025. 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-2025-68729 in the wild and no public exploit code.

Affected product: Linux. 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-2025-68729/ (Markdown: https://insights.sbomify.com/CVE-2025-68729/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-68729
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-68729
- OSV: https://osv.dev/vulnerability/CVE-2025-68729

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-68729/
Summaries are generated and may contain mistakes; the official description above is the record.