# CVE-2011-3146: Null dereference in n/a

> Attackers can cause denial of service or execute arbitrary code by tricking users into opening a malicious SVG file with a library that misidentifies filter primitives.

- **Severity:** Medium 6.8 (`AV:N/AC:M/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 5 Sep 2012
- **Updated:** 16 Sep 2024
- **Also known as:** DEBIAN-CVE-2011-3146, GHSA-x9rw-3x6c-c4h9, RHSA-2011:1289

## What is CVE-2011-3146?

CVE-2011-3146 is a medium-severity vulnerability in n/a, published on 5 Sep 2012. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

librsvg before 2.34.1 uses the node name to identify the type of node, which allows context-dependent attackers to cause a denial of service (NULL pointer dereference) and possibly execute arbitrary code via a SVG file with a node with the element name starting with "fe," which is misidentified as a RsvgFilterPrimitive.

## Which versions are affected by CVE-2011-3146?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `librsvg2` | Red Hat:enterprise_linux:6::server | All versions | 0:2.26.0-5.el6_1.1 |
| `librsvg2-debuginfo` | Red Hat:enterprise_linux:6::server | All versions | 0:2.26.0-5.el6_1.1 |
| `librsvg2-devel` | Red Hat:enterprise_linux:6::server | All versions | 0:2.26.0-5.el6_1.1 |

Products: Gnome Librsvg.

## How do I fix CVE-2011-3146?

Upgrade to a fixed version.

## Is CVE-2011-3146 being exploited?

There is no known exploitation of CVE-2011-3146 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2017-11464](https://insights.sbomify.com/CVE-2017-11464/): Denial of service in n/a (high 7.8)
- [CVE-2015-7557](https://insights.sbomify.com/CVE-2015-7557/): Denial of service in n/a (high 7.5)
- [CVE-2016-6163](https://insights.sbomify.com/CVE-2016-6163/): Denial of service in n/a (medium 5.5)
- [CVE-2013-1881](https://insights.sbomify.com/CVE-2013-1881/): XML external entity in n/a (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-3146 and fix it if it is affected.

What it is: CVE-2011-3146 is a medium-severity vulnerability in n/a, published on 5 Sep 2012. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2011-3146 in the wild and no public exploit code.

Affected product: n/a. 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-2011-3146/ (Markdown: https://insights.sbomify.com/CVE-2011-3146/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-3146
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-3146
- OSV: https://osv.dev/vulnerability/CVE-2011-3146

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-3146/
Summaries are generated and may contain mistakes; the official description above is the record.