# CVE-2024-31083: Xorg-x11-server: use-after-free in procrenderaddglyphs

> An authenticated attacker can execute arbitrary code on the system by exploiting a use-after-free flaw in the Xorg server's glyph processing.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 5 Apr 2024
- **Updated:** 20 Nov 2025
- **Also known as:** AZL-39307, AZL-44382, BELL-CVE-2024-31083, DEBIAN-CVE-2024-31083, GHSA-q6w6-rjjj-5p52, SUSE-SU-2024:1263-1, UBUNTU-CVE-2024-31083

## What is CVE-2024-31083?

CVE-2024-31083 is a high-severity use after free vulnerability in Red Hat Enterprise Linux 10, published on 5 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A use-after-free vulnerability was found in the ProcRenderAddGlyphs() function of Xorg servers. This issue occurs when AllocateGlyph() is called to store new glyphs sent by the client to the X server, potentially resulting in multiple entries pointing to the same non-refcounted glyphs. Consequently, ProcRenderAddGlyphs() may free a glyph, leading to a use-after-free scenario when the same glyph pointer is subsequently accessed. This flaw allows an authenticated attacker to execute arbitrary code on the system by sending a specially crafted request.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2024-31083?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `xorg-x11-server` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 1.19.6-10.74.1 |
| `xorg-x11-server` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 1.19.6-10.74.1 |
| `xorg-x11-server` | SUSE:Linux Enterprise Software Development Kit 12 SP5 | All versions | 1.19.6-10.74.1 |

## How do I fix CVE-2024-31083?

Apply the vendor's patch.

## Is CVE-2024-31083 being exploited?

There is no known exploitation of CVE-2024-31083 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-31083 and fix it if it is affected.

What it is: CVE-2024-31083 is a high-severity use after free vulnerability in Red Hat Enterprise Linux 10, published on 5 Apr 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-2024-31083 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-2024-31083/ (Markdown: https://insights.sbomify.com/CVE-2024-31083/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-31083
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-31083
- OSV: https://osv.dev/vulnerability/CVE-2024-31083

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-31083/
Summaries are generated and may contain mistakes; the official description above is the record.