# CVE-2021-30263: Race condition in Snapdragon Compute, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music

> A race condition in Qualcomm Snapdragon logging allows attackers to potentially execute code or escalate privileges via concurrent node access.

- **Severity:** Medium 6.7 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 12 Nov 2021
- **Updated:** 3 Aug 2024
- **Also known as:** 2849917, A-187084382, GHSA-763m-x8v7-rj25, PUB-A-187084382

## What is CVE-2021-30263?

CVE-2021-30263 is a medium-severity vulnerability in Qualcomm Aqt1000 Firmware, published on 12 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Possible race condition can occur due to lack of synchronization mechanism when On-Device Logging node open twice concurrently in Snapdragon Compute, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2021-30263?

It affects 27 products.


Products: Qualcomm Aqt1000 Firmware, Qualcomm Ar8031 Firmware, Qualcomm Ar8035 Firmware, Qualcomm Csra6620 Firmware, Qualcomm Csra6640 Firmware, Qualcomm Qca6391 Firmware, Qualcomm Qca6420 Firmware, Qualcomm Qca6430 Firmware, Qualcomm Qca8337 Firmware, Qualcomm Qcm6125 Firmware, Qualcomm Qcs405 Firmware, Qualcomm Qcs6125 Firmware, Qualcomm Sd855 Firmware, Qualcomm Sd 8c Firmware, Qualcomm Sd 8cx Firmware, Qualcomm Sdx55 Firmware, Qualcomm Sdx55m Firmware, Qualcomm Wcd9335 Firmware, Qualcomm Wcd9340 Firmware, Qualcomm Wcd9341 Firmware and 7 more.

## How do I fix CVE-2021-30263?

Apply the vendor's patch.

## Is CVE-2021-30263 being exploited?

There is no known exploitation of CVE-2021-30263 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Aqt1000 Firmware

- [CVE-2025-21479](https://insights.sbomify.com/CVE-2025-21479/): Qualcomm Multiple Chipsets Incorrect Authorization (high 8.6, exploited in the wild)
- [CVE-2025-21480](https://insights.sbomify.com/CVE-2025-21480/): Qualcomm Multiple Chipsets Incorrect Authorization (high 8.6, exploited in the wild)
- [CVE-2023-28562](https://insights.sbomify.com/CVE-2023-28562/): Buffer Copy Without Checking Size of Input in QESL (critical 9.8)
- [CVE-2022-40514](https://insights.sbomify.com/CVE-2022-40514/): Buffer copy without checking size of input in WLAN Firmware (critical 9.8)
- [CVE-2022-22096](https://insights.sbomify.com/CVE-2022-22096/): Memory corruption in Snapdragon Connectivity, Snapdragon Mobile (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-30263 and fix it if it is affected.

What it is: CVE-2021-30263 is a medium-severity vulnerability in Qualcomm Aqt1000 Firmware, published on 12 Nov 2021. 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-2021-30263 in the wild and no public exploit code.

Affected product: Qualcomm Aqt1000 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-2021-30263/ (Markdown: https://insights.sbomify.com/CVE-2021-30263/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-30263
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-30263
- OSV: https://osv.dev/vulnerability/CVE-2021-30263

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-30263/
Summaries are generated and may contain mistakes; the official description above is the record.