# CVE-2024-21478: NULL Pointer Dereference in Graphics

> A null pointer dereference in Qualcomm Graphics allows attackers to cause a transient denial of service during DMA fence callback setup.

- **Severity:** Medium 6.2 (`CVSS:3.1/AV:L/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 3 Jun 2024
- **Updated:** 1 Aug 2024
- **Also known as:** 3594987, A-323926460, ASB-A-323926460, GHSA-gcw4-6m66-w6fv

## What is CVE-2024-21478?

CVE-2024-21478 is a medium-severity vulnerability in Qualcomm Qam8255p Firmware, published on 3 Jun 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

transient DOS when setting up a fence callback to free a KGSL memory entry object during DMA.

Weakness: CWE-476 (NULL Pointer Dereference), CWE-704 (Incorrect Type Conversion or Cast)

## Which versions are affected by CVE-2024-21478?

It affects 12 products.


Products: Qualcomm Qam8255p Firmware, Qualcomm Qam8650p Firmware, Qualcomm Qam8775p Firmware, Qualcomm Qamsrv1h Firmware, Qualcomm Qamsrv1m Firmware, Qualcomm Sa8255p Firmware, Qualcomm Sa8650p Firmware, Qualcomm Sa8770p Firmware, Qualcomm Sa8775p Firmware, Qualcomm Sa9000p Firmware, Qualcomm Srv1h Firmware, Qualcomm Srv1m Firmware.

## How do I fix CVE-2024-21478?

Apply the vendor's patch.

## Is CVE-2024-21478 being exploited?

There is no known exploitation of CVE-2024-21478 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Qam8255p Firmware

- [CVE-2025-47372](https://insights.sbomify.com/CVE-2025-47372/): Buffer Copy Without Checking Size of Input in Boot (critical 9.0)
- [CVE-2023-43517](https://insights.sbomify.com/CVE-2023-43517/): Improper Access Control in Automotive Multimedia (high 8.4)
- [CVE-2023-33108](https://insights.sbomify.com/CVE-2023-33108/): Use After Free in Graphics (high 8.4)
- [CVE-2023-33074](https://insights.sbomify.com/CVE-2023-33074/): Use After Free in Audio (high 8.4)
- [CVE-2025-47357](https://insights.sbomify.com/CVE-2025-47357/): Missing Authentication for Critical Function in SMSS (high 8.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-21478 and fix it if it is affected.

What it is: CVE-2024-21478 is a medium-severity vulnerability in Qualcomm Qam8255p Firmware, published on 3 Jun 2024. 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-2024-21478 in the wild and no public exploit code.

Affected product: Qualcomm Qam8255p 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-2024-21478/ (Markdown: https://insights.sbomify.com/CVE-2024-21478/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-21478
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-21478
- OSV: https://osv.dev/vulnerability/CVE-2024-21478

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-21478/
Summaries are generated and may contain mistakes; the official description above is the record.