# CVE-2025-6199: Gdk-pixbuf: uninitialized memory disclosure in gdkpixbuf gif lzw decoder

> An attacker can leak arbitrary memory contents by providing a malicious GIF file to applications using the vulnerable GdkPixbuf library.

- **Severity:** Low 3.3 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N`)
- **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:** Yes
- **Published:** 17 Jun 2025
- **Updated:** 30 Jun 2026
- **Also known as:** AZL-64077, AZL-64079, DEBIAN-CVE-2025-6199, DLA-4225-1, DSA-5946-1, GHSA-h3qh-mvr3-r7x7, MGASA-2025-0198, OESA-2025-1866, UBUNTU-CVE-2025-6199, openSUSE-SU-2025:15397-1

## What is CVE-2025-6199?

CVE-2025-6199 is a low-severity vulnerability in Red Hat Enterprise Linux 10, published on 17 Jun 2025. 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

A flaw was found in the GIF parser of GdkPixbuf’s LZW decoder. When an invalid symbol is encountered during decompression, the decoder sets the reported output size to the full buffer length rather than the actual number of written bytes. This logic error results in uninitialized sections of the buffer being included in the output, potentially leaking arbitrary memory contents in the processed image.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2025-6199?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `gdk-pixbuf` | openSUSE:Tumbleweed | All versions | 2.42.12-4.1 |

Products: Gnome Gdkpixbuf.

## How do I fix CVE-2025-6199?

Apply the vendor's patch.

## Is CVE-2025-6199 being exploited?

There is no known exploitation of CVE-2025-6199 in the wild and no public exploit code.

## Other vulnerabilities in Red Hat Enterprise Linux 10

- [CVE-2022-48622](https://insights.sbomify.com/CVE-2022-48622/): Memory corruption in n/a (high 7.8)
- [CVE-2005-2975](https://insights.sbomify.com/CVE-2005-2975/): Denial of service in n/a (high 7.8)
- [CVE-2005-2976](https://insights.sbomify.com/CVE-2005-2976/): Integer overflow in n/a (high 7.5)
- [CVE-2005-3186](https://insights.sbomify.com/CVE-2005-3186/): Integer overflow in n/a (high 7.5)
- [CVE-2004-0782](https://insights.sbomify.com/CVE-2004-0782/): Integer overflow in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-6199 and fix it if it is affected.

What it is: CVE-2025-6199 is a low-severity vulnerability in Red Hat Enterprise Linux 10, published on 17 Jun 2025. 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 CVE-2025-6199 in the wild and no public exploit code.

Affected product: Red Hat Enterprise Linux 10. 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-2025-6199/ (Markdown: https://insights.sbomify.com/CVE-2025-6199/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-6199
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-6199
- OSV: https://osv.dev/vulnerability/CVE-2025-6199

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-6199/
Summaries are generated and may contain mistakes; the official description above is the record.