# CVE-2023-21657: Improper Input Validation in Audio

> Memory corruption in Qualcomm Snapdragon audio subsystem allows attackers to execute arbitrary code or escalate privileges via crafted ADSP input.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 6 Jun 2023
- **Updated:** 2 Aug 2024
- **Also known as:** 3344305, A-271880369, ASB-A-271880369, GHSA-fp6g-5cm4-6g9x

## What is CVE-2023-21657?

CVE-2023-21657 is a high-severity memory corruption vulnerability in Qualcomm Csra6620 Firmware, published on 6 Jun 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Memoru corruption in Audio when ADSP sends input during record use case.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2023-21657?

It affects 126 products.


Products: Qualcomm Csra6620 Firmware, Qualcomm Csra6640 Firmware, Qualcomm Flight Rb5 5g Platform Firmware, Qualcomm Mdm9650 Firmware, Qualcomm Qam8255p Firmware, Qualcomm Qam8295p Firmware, Qualcomm Qam8650p Firmware, Qualcomm Qam8775p Firmware, Qualcomm Qca6174a Firmware, Qualcomm Qca6310 Firmware, Qualcomm Qca6320 Firmware, Qualcomm Qca6390 Firmware, Qualcomm Qca6391 Firmware, Qualcomm Qca6426 Firmware, Qualcomm Qca6436 Firmware, Qualcomm Qca6574 Firmware, Qualcomm Qca6574a Firmware, Qualcomm Qca6574au Firmware, Qualcomm Qca6595 Firmware, Qualcomm Qca6595au Firmware and 106 more.

## How do I fix CVE-2023-21657?

Apply the vendor's patch.

## Is CVE-2023-21657 being exploited?

There is no known exploitation of CVE-2023-21657 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Csra6620 Firmware

- [CVE-2025-27063](https://insights.sbomify.com/CVE-2025-27063/): Use After Free in Video (high 7.8)
- [CVE-2024-49834](https://insights.sbomify.com/CVE-2024-49834/): Improper Validation of Array Index in Camera (high 7.8)
- [CVE-2025-47334](https://insights.sbomify.com/CVE-2025-47334/): Buffer Copy Without Checking Size of Input in Camera Driver (medium 6.7)
- [CVE-2025-47344](https://insights.sbomify.com/CVE-2025-47344/): Time-of-check Time-of-use (TOCTOU) Race Condition in Camera Driver (medium 6.7)
- [CVE-2022-40533](https://insights.sbomify.com/CVE-2022-40533/): Untrusted Pointer Dereference in Core (medium 6.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-21657 and fix it if it is affected.

What it is: CVE-2023-21657 is a high-severity memory corruption vulnerability in Qualcomm Csra6620 Firmware, published on 6 Jun 2023. 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-2023-21657 in the wild and no public exploit code.

Affected product: Qualcomm Csra6620 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-2023-21657/ (Markdown: https://insights.sbomify.com/CVE-2023-21657/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-21657
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-21657
- OSV: https://osv.dev/vulnerability/CVE-2023-21657

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-21657/
Summaries are generated and may contain mistakes; the official description above is the record.