# CVE-2021-30283: Denial of service in Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile

> Attackers can cause a denial of service in Snapdragon devices by improperly handling debug register traps from user applications.

- **Severity:** High 7.1 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/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:** No
- **Published:** 3 Jan 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-fwhh-8j4m-vvw8

## What is CVE-2021-30283?

CVE-2021-30283 is a high-severity denial of service vulnerability in Qualcomm Qca6391 Firmware, published on 3 Jan 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Possible denial of service due to improper handling of debug register trap from user applications in Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile

Weakness: CWE-755 (Improper Handling of Exceptional Conditions)

## Which versions are affected by CVE-2021-30283?

It affects 19 products.


Products: Qualcomm Qca6391 Firmware, Qualcomm Qcm6490 Firmware, Qualcomm Qcs6490 Firmware, Qualcomm Qrb5165 Firmware, Qualcomm Qrb5165n Firmware, Qualcomm Sd778g Firmware, Qualcomm Sd888 5g Firmware, Qualcomm Sm7325p Firmware, Qualcomm Wcd9370 Firmware, Qualcomm Wcd9375 Firmware, Qualcomm Wcd9380 Firmware, Qualcomm Wcd9385 Firmware, Qualcomm Wcn6750 Firmware, Qualcomm Wcn6850 Firmware, Qualcomm Wcn6851 Firmware, Qualcomm Wcn6855 Firmware, Qualcomm Wcn6856 Firmware, Qualcomm Wsa8830 Firmware, Qualcomm Wsa8835 Firmware.

## How do I fix CVE-2021-30283?

No fix has been published for CVE-2021-30283 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-30283 being exploited?

There is no known exploitation of CVE-2021-30283 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Qca6391 Firmware

- [CVE-2023-21630](https://insights.sbomify.com/CVE-2023-21630/): Integer Overflow in Multimedia Framework (high 8.4)
- [CVE-2021-35134](https://insights.sbomify.com/CVE-2021-35134/): Memory corruption in Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile (high 8.4)
- [CVE-2025-21476](https://insights.sbomify.com/CVE-2025-21476/): Buffer Copy Without Checking Size of Input in Computer Vision (high 7.8)
- [CVE-2023-21655](https://insights.sbomify.com/CVE-2023-21655/): Integer Overflow or Wraparound in Display (medium 6.7)
- [CVE-2021-1918](https://insights.sbomify.com/CVE-2021-1918/): Information disclosure in Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-30283 and fix it if it is affected.

What it is: CVE-2021-30283 is a high-severity denial of service vulnerability in Qualcomm Qca6391 Firmware, published on 3 Jan 2022. 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-2021-30283 in the wild and no public exploit code.

Affected product: Qualcomm Qca6391 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-2021-30283/ (Markdown: https://insights.sbomify.com/CVE-2021-30283/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-30283
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-30283
- OSV: https://osv.dev/vulnerability/CVE-2021-30283

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-30283/
Summaries are generated and may contain mistakes; the official description above is the record.