# CVE-2023-33016: Buffer Over-read in WLAN Firmware

> A buffer over-read in Qualcomm WLAN firmware allows attackers to cause a transient denial of service during MLO parsing.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Sep 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-2fjf-h46q-8mfr

## What is CVE-2023-33016?

CVE-2023-33016 is a high-severity denial of service vulnerability in Qualcomm Csr8811 Firmware, published on 5 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Transient DOS in WLAN firmware while parsing MLO (multi-link operation).

Weakness: CWE-125 (Out-of-bounds Read), CWE-126 (Buffer Over-read)

## Which versions are affected by CVE-2023-33016?

It affects 66 products.


Products: Qualcomm Csr8811 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Immersive Home 214 Firmware, Qualcomm Immersive Home 216 Firmware, Qualcomm Immersive Home 316 Firmware, Qualcomm Immersive Home 318 Firmware, Qualcomm Ipq5010 Firmware, Qualcomm Ipq5028 Firmware, Qualcomm Ipq6000 Firmware, Qualcomm Ipq6010 Firmware, Qualcomm Ipq6018 Firmware, Qualcomm Ipq6028 Firmware, Qualcomm Ipq8070a Firmware, Qualcomm Ipq8071a Firmware, Qualcomm Ipq8072a Firmware, Qualcomm Ipq8074a Firmware, Qualcomm Ipq8076 Firmware, Qualcomm Ipq8076a Firmware, Qualcomm Ipq8078 Firmware and 46 more.

## How do I fix CVE-2023-33016?

No fix has been published for CVE-2023-33016 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-33016 being exploited?

There is no known exploitation of CVE-2023-33016 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Csr8811 Firmware

- [CVE-2024-33066](https://insights.sbomify.com/CVE-2024-33066/): Improper Input Validation in WLAN Resource Manager (critical 9.8)
- [CVE-2022-25652](https://insights.sbomify.com/CVE-2022-25652/): Weak cryptography in Snapdragon Wired Infrastructure and Networking (critical 9.0)
- [CVE-2023-33053](https://insights.sbomify.com/CVE-2023-33053/): Improper Validation of Array Index in Kernel (high 8.4)
- [CVE-2022-40522](https://insights.sbomify.com/CVE-2022-40522/): Double free in Linux Networking (high 8.4)
- [CVE-2024-33049](https://insights.sbomify.com/CVE-2024-33049/): Buffer Over-read in WLAN Host Communication (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-33016 and fix it if it is affected.

What it is: CVE-2023-33016 is a high-severity denial of service vulnerability in Qualcomm Csr8811 Firmware, published on 5 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-33016 in the wild and no public exploit code.

Affected product: Qualcomm Csr8811 Firmware. 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-2023-33016/ (Markdown: https://insights.sbomify.com/CVE-2023-33016/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-33016
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-33016
- OSV: https://osv.dev/vulnerability/CVE-2023-33016

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-33016/
Summaries are generated and may contain mistakes; the official description above is the record.