# OSV-2024-951: Index-out-of-bounds in hevc_ref_pic_lists_modification

> An index-out-of-bounds error in the HEVC reference picture list modification parser can cause crashes or potential code execution when processing malicious media files.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 16 Aug 2024

## What is OSV-2024-951?

OSV-2024-951 is a memory corruption vulnerability in gpac, published on 16 Aug 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=71054

```
Crash type: Index-out-of-bounds
Crash state:
hevc_ref_pic_lists_modification
gf_hevc_parse_nalu_bs
gf_inspect_dump_nalu_internal
```

## Which versions are affected by OSV-2024-951?

1 open source package ship an affected version, including gpac.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `gpac` | OSS-Fuzz | All versions | None |

## How do I fix OSV-2024-951?

No fix has been published for OSV-2024-951 yet. Limit exposure of the affected software until one is available.

## Is OSV-2024-951 being exploited?

There is no known exploitation of OSV-2024-951 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for OSV-2024-951 and fix it if it is affected.

What it is: OSV-2024-951 is a memory corruption vulnerability in gpac, published on 16 Aug 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of OSV-2024-951 in the wild and no public exploit code.

Affected packages and fixed versions:
- gpac (OSS-Fuzz): affected all versions; no fix listed

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/OSV-2024-951/ (Markdown: https://insights.sbomify.com/OSV-2024-951/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/OSV-2024-951

---
From sbomify Insights: https://insights.sbomify.com/OSV-2024-951/
Summaries are generated and may contain mistakes; the official description above is the record.