# CVE-2023-28577: Multiple Dmabuf Kernel Address UAF Vulnerability

> A race condition in Qualcomm Snapdragon drivers allows attackers to trigger a use-after-free, potentially leading to code execution or privilege escalation.

- **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:** 8 Aug 2023
- **Updated:** 2 Aug 2024
- **Also known as:** 3489559, A-283319714, GHSA-rjh6-h795-3mrj, PUB-A-283319714

## What is CVE-2023-28577?

CVE-2023-28577 is a medium-severity use after free vulnerability in Qualcomm Fastconnect 6800 Firmware, published on 8 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In the function call related to CAM_REQ_MGR_RELEASE_BUF there is no check if the buffer is being used. So when a function called cam_mem_get_cpu_buf to get the kernel va to use, another thread can call CAM_REQ_MGR_RELEASE_BUF to unmap the kernel va which cause UAF of the kernel address.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2023-28577?

It affects 31 products.


Products: Qualcomm Fastconnect 6800 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Qca6391 Firmware, Qualcomm Qca6426 Firmware, Qualcomm Qca6436 Firmware, Qualcomm Qcn9074 Firmware, Qualcomm Qcs410 Firmware, Qualcomm Qcs610 Firmware, Qualcomm Sd865 5g Firmware, Qualcomm Snapdragon 865\+ 5g Firmware, Qualcomm Snapdragon 865 5g Firmware, Qualcomm Snapdragon 870 5g Firmware, Qualcomm Snapdragon 8 Gen 1 Firmware, Qualcomm Snapdragon X55 5g Firmware, Qualcomm Snapdragon Xr2 5g Firmware, Qualcomm Sw5100 Firmware, Qualcomm Sw5100p Firmware, Qualcomm Sxr2130 Firmware, Qualcomm Wcd9341 Firmware and 11 more.

## How do I fix CVE-2023-28577?

Apply the vendor's patch.

## Is CVE-2023-28577 being exploited?

There is no known exploitation of CVE-2023-28577 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Fastconnect 6800 Firmware

- [CVE-2023-28581](https://insights.sbomify.com/CVE-2023-28581/): Improper Restriction of Operations within the Bounds of a Memory Buffer in WLAN Firmware (critical 9.8)
- [CVE-2025-27037](https://insights.sbomify.com/CVE-2025-27037/): Use After Free in Camera Driver (high 7.8)
- [CVE-2025-21455](https://insights.sbomify.com/CVE-2025-21455/): Time-of-check Time-of-use (TOCTOU) Race Condition in Camera_Linux (high 7.8)
- [CVE-2025-21474](https://insights.sbomify.com/CVE-2025-21474/): Use After Free in BTHOST (high 7.8)
- [CVE-2024-45566](https://insights.sbomify.com/CVE-2024-45566/): Use After Free in Camera Driver (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-28577 and fix it if it is affected.

What it is: CVE-2023-28577 is a medium-severity use after free vulnerability in Qualcomm Fastconnect 6800 Firmware, published on 8 Aug 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-2023-28577 in the wild and no public exploit code.

Affected product: Qualcomm Fastconnect 6800 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-2023-28577/ (Markdown: https://insights.sbomify.com/CVE-2023-28577/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-28577
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-28577
- OSV: https://osv.dev/vulnerability/CVE-2023-28577

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-28577/
Summaries are generated and may contain mistakes; the official description above is the record.