# CVE-2022-40505: Buffer over-read in Modem

> An attacker can read sensitive memory contents via a buffer over-read in the Qualcomm Snapdragon modem during DNS hostname parsing.

- **Severity:** High 8.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L`)
- **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-4p3h-qrpg-h7hr

## What is CVE-2022-40505?

CVE-2022-40505 is a high-severity vulnerability in Qualcomm Mdm8207 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

Information disclosure due to buffer over-read in Modem while parsing DNS hostname.

Weakness: CWE-125 (Out-of-bounds Read), CWE-126 (Buffer Over-read)

## Which versions are affected by CVE-2022-40505?

It affects 13 products.


Products: Qualcomm 9205 Lte Modem Firmware, Qualcomm 9206 Lte Modem Firmware, Qualcomm 9207 Lte Modem Firmware, Qualcomm Mdm8207 Firmware, Qualcomm Qca4004 Firmware, Qualcomm Qca4010 Firmware, Qualcomm Qts110 Firmware, Qualcomm Snapdragon 1100 Wearable Platform Firmware, Qualcomm Snapdragon 1200 Wearable Platform Firmware, Qualcomm Snapdragon Wear 1300 Platform Firmware, Qualcomm Snapdragon X5 Lte Modem Firmware, Qualcomm Wcd9306 Firmware, Qualcomm Wcd9330 Firmware.

## How do I fix CVE-2022-40505?

No fix has been published for CVE-2022-40505 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-40505 being exploited?

There is no known exploitation of CVE-2022-40505 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Mdm8207 Firmware

- [CVE-2023-33032](https://insights.sbomify.com/CVE-2023-33032/): Integer Overflow or Wraparound in TZ Secure OS (critical 9.3)
- [CVE-2022-33287](https://insights.sbomify.com/CVE-2022-33287/): Buffer over-read in Modem (high 8.2)
- [CVE-2022-33291](https://insights.sbomify.com/CVE-2022-33291/): Buffer over-read in Modem (high 8.2)
- [CVE-2024-21465](https://insights.sbomify.com/CVE-2024-21465/): Buffer Over-read in Trusted Execution Environment (high 7.8)
- [CVE-2023-43542](https://insights.sbomify.com/CVE-2023-43542/): Buffer Copy Without Checking Size of Input in Trusted Execution Environment (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-40505 and fix it if it is affected.

What it is: CVE-2022-40505 is a high-severity vulnerability in Qualcomm Mdm8207 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-2022-40505 in the wild and no public exploit code.

Affected product: Qualcomm Mdm8207 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-2022-40505/ (Markdown: https://insights.sbomify.com/CVE-2022-40505/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-40505
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-40505
- OSV: https://osv.dev/vulnerability/CVE-2022-40505

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-40505/
Summaries are generated and may contain mistakes; the official description above is the record.