# CVE-2023-21629: Double Free in Modem

> A double free vulnerability in Qualcomm Snapdragon modem firmware allows attackers to cause memory corruption, potentially leading to code execution or denial of service.

- **Severity:** Medium 6.8 (`CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:** 4 Jul 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-wc7f-hjq2-jvv5

## What is CVE-2023-21629?

CVE-2023-21629 is a medium-severity use after free vulnerability in Qualcomm Apq8017 Firmware, published on 4 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Memory Corruption in Modem due to double free while parsing the PKCS15 sim files.

Weakness: CWE-415 (Double Free)

## Which versions are affected by CVE-2023-21629?

It affects 212 products.


Products: Qualcomm 205 Firmware, Qualcomm 215 Firmware, Qualcomm 315 5g Firmware, Qualcomm Apq8017 Firmware, Qualcomm Apq8037 Firmware, Qualcomm Aqt1000 Firmware, Qualcomm Ar8035 Firmware, Qualcomm C-V2x 9150 Firmware, Qualcomm Csra6620 Firmware, Qualcomm Csra6640 Firmware, Qualcomm Csrb31024 Firmware, Qualcomm Fastconnect 6200 Firmware, Qualcomm Fastconnect 6700 Firmware, Qualcomm Fastconnect 6800 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Mdm9250 Firmware, Qualcomm Mdm9650 Firmware, Qualcomm Msm8108 Firmware, Qualcomm Msm8209 Firmware and 192 more.

## How do I fix CVE-2023-21629?

No fix has been published for CVE-2023-21629 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-21629 being exploited?

There is no known exploitation of CVE-2023-21629 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Apq8017 Firmware

- [CVE-2023-22667](https://insights.sbomify.com/CVE-2023-22667/): Integer Overflow or Wraparound in Audio (high 8.4)
- [CVE-2024-33042](https://insights.sbomify.com/CVE-2024-33042/): Buffer Copy Without Checking Size of Input (`Classic Buffer Overflow`) in FM Host (high 7.8)
- [CVE-2023-22387](https://insights.sbomify.com/CVE-2023-22387/): Use of Out-of-range Pointer Offset in Qualcomm IPC (high 7.8)
- [CVE-2024-53027](https://insights.sbomify.com/CVE-2024-53027/): Buffer Copy Without Checking Size of Input in WLAN Host (high 7.5)
- [CVE-2023-33019](https://insights.sbomify.com/CVE-2023-33019/): Improper Authorization in WLAN Host (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-21629 and fix it if it is affected.

What it is: CVE-2023-21629 is a medium-severity use after free vulnerability in Qualcomm Apq8017 Firmware, published on 4 Jul 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-2023-21629 in the wild and no public exploit code.

Affected product: Qualcomm Apq8017 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-2023-21629/ (Markdown: https://insights.sbomify.com/CVE-2023-21629/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-21629
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-21629
- OSV: https://osv.dev/vulnerability/CVE-2023-21629

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-21629/
Summaries are generated and may contain mistakes; the official description above is the record.