# CVE-2022-25310: Null dereference in fribidi

> An attacker can cause a denial of service by providing a specially crafted file to the Fribidi library, triggering a segmentation fault.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 6 Sep 2022
- **Updated:** 3 Aug 2024
- **Also known as:** ALPINE-CVE-2022-25310, AZL-10888, DEBIAN-CVE-2022-25310, GHSA-rmjj-m2vr-q2x2, JLSEC-2025-172, UBUNTU-CVE-2022-25310

## What is CVE-2022-25310?

CVE-2022-25310 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 6 Sep 2022. 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 segmentation fault (SEGV) flaw was found in the Fribidi package and affects the fribidi_remove_bidi_marks() function of the lib/fribidi.c file. This flaw allows an attacker to pass a specially crafted file to Fribidi, leading to a crash and causing a denial of service.

Weakness: CWE-476 (NULL Pointer Dereference), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2022-25310?

It affects 2 products.


Products: Gnu Fribidi, Redhat Enterprise Linux.

## How do I fix CVE-2022-25310?

Apply the vendor's patch.

## Is CVE-2022-25310 being exploited?

There is no known exploitation of CVE-2022-25310 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Enterprise Linux

- [CVE-2022-25308](https://insights.sbomify.com/CVE-2022-25308/): Memory corruption in fribidi (high 7.8)
- [CVE-2022-25309](https://insights.sbomify.com/CVE-2022-25309/): Memory corruption in fribidi (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-25310 and fix it if it is affected.

What it is: CVE-2022-25310 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 6 Sep 2022. 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-2022-25310 in the wild and no public exploit code.

Affected product: Redhat Enterprise Linux. 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-2022-25310/ (Markdown: https://insights.sbomify.com/CVE-2022-25310/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-25310
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-25310
- OSV: https://osv.dev/vulnerability/CVE-2022-25310

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-25310/
Summaries are generated and may contain mistakes; the official description above is the record.