# CVE-2022-40508: Reachable assertion in Modem

> A reachable assertion in the Modem component allows attackers to cause a transient denial of service via unsupported cross-carrier scheduling configurations.

- **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:** 2 May 2023
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-5353-grp4-p243

## What is CVE-2022-40508?

CVE-2022-40508 is a high-severity denial of service vulnerability in Qualcomm 315 5g Iot Modem Firmware, published on 2 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Transient DOS due to reachable assertion in Modem while processing config related to cross carrier scheduling, which is not supported.

Weakness: CWE-617 (Reachable Assertion)

## Which versions are affected by CVE-2022-40508?

It affects 68 products.


Products: Qualcomm 315 5g Iot Modem Firmware, Qualcomm Aqt1000 Firmware, Qualcomm Ar8035 Firmware, Qualcomm Qca6390 Firmware, Qualcomm Qca6391 Firmware, Qualcomm Qca6421 Firmware, Qualcomm Qca6426 Firmware, Qualcomm Qca6431 Firmware, Qualcomm Qca6436 Firmware, Qualcomm Qca6574a Firmware, Qualcomm Qca6574au Firmware, Qualcomm Qca6595au Firmware, Qualcomm Qca6696 Firmware, Qualcomm Qca6698aq Firmware, Qualcomm Qca8081 Firmware, Qualcomm Qca8337 Firmware, Qualcomm Qcn6024 Firmware, Qualcomm Qcn9024 Firmware, Qualcomm Sd855 Firmware, Qualcomm Sd865 5g Firmware and 48 more.

## How do I fix CVE-2022-40508?

No fix has been published for CVE-2022-40508 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-40508 being exploited?

There is no known exploitation of CVE-2022-40508 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm 315 5g Iot Modem Firmware

- [CVE-2023-33107](https://insights.sbomify.com/CVE-2023-33107/): Qualcomm Multiple Chipsets Integer Overflow (high 8.4, exploited in the wild)
- [CVE-2023-33063](https://insights.sbomify.com/CVE-2023-33063/): Qualcomm Multiple Chipsets Use-After-Free (high 7.8, exploited in the wild)
- [CVE-2025-27034](https://insights.sbomify.com/CVE-2025-27034/): Improper Validation of Array Index in Multi-Mode Call Processor (critical 9.8)
- [CVE-2023-22388](https://insights.sbomify.com/CVE-2023-22388/): Use of Out-of-range Pointer Offset in Multi-mode Call Processor (critical 9.8)
- [CVE-2023-28578](https://insights.sbomify.com/CVE-2023-28578/): Improper Input Validation in Services (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-40508 and fix it if it is affected.

What it is: CVE-2022-40508 is a high-severity denial of service vulnerability in Qualcomm 315 5g Iot Modem Firmware, published on 2 May 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-2022-40508 in the wild and no public exploit code.

Affected product: Qualcomm 315 5g Iot Modem 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-2022-40508/ (Markdown: https://insights.sbomify.com/CVE-2022-40508/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-40508
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-40508
- OSV: https://osv.dev/vulnerability/CVE-2022-40508

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-40508/
Summaries are generated and may contain mistakes; the official description above is the record.