# CVE-2022-4743: Denial of service in SDL2

> A memory leak in SDL2's GLES_CreateTexture function allows attackers to cause a denial of service by exhausting system resources.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 12 Jan 2023
- **Updated:** 25 Nov 2025
- **Also known as:** AZL-43546, AZL-44748, DEBIAN-CVE-2022-4743, DLA-4382-1, GHSA-94g7-4r7x-4rfv, JLSEC-2026-365, MGASA-2023-0020, OESA-2023-1029, SUSE-SU-2023:0069-1, UBUNTU-CVE-2022-4743, openSUSE-SU-2023:0017-1

## What is CVE-2022-4743?

CVE-2022-4743 is a high-severity denial of service vulnerability in Redhat Enterprise Linux, published on 12 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A potential memory leak issue was discovered in SDL2 in GLES_CreateTexture() function in SDL_render_gles.c. The vulnerability allows an attacker to cause a denial of service attack. The vulnerability affects SDL2 v2.0.4 and above. SDL-1.x are not affected.

Weakness: CWE-401 (Missing Release of Memory after Effective Lifetime)

## Which versions are affected by CVE-2022-4743?

It affects 2 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `SDL2` | SUSE:Linux Enterprise Module for Desktop Applications 15 SP4 | All versions | 2.0.8-150200.11.9.1 |
| `SDL2` | SUSE:Linux Enterprise Module for Package Hub 15 SP4 | All versions | 2.0.8-150200.11.9.1 |
| `SDL2` | SUSE:Linux Enterprise Real Time 15 SP3 | All versions | 2.0.8-150200.11.9.1 |
| `SDL2` | SUSE:Package Hub 12 | All versions | 2.0.5-10.1 |
| `SDL2` | openSUSE:Leap 15.4 | All versions | 2.0.8-150200.11.9.1 |

Products: Libsdl Simple Directmedia Layer, Redhat Enterprise Linux.

## How do I fix CVE-2022-4743?

Apply the vendor's patch.

## Is CVE-2022-4743 being exploited?

There is no known exploitation of CVE-2022-4743 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Enterprise Linux

- [CVE-2021-33657](https://insights.sbomify.com/CVE-2021-33657/): Memory corruption in SDL2 (high 8.8)
- [CVE-2019-14906](https://insights.sbomify.com/CVE-2019-14906/): Memory corruption in SDL (high 8.1)
- [CVE-2022-34568](https://insights.sbomify.com/CVE-2022-34568/): Use after free in n/a (high 7.5)
- [CVE-2019-12222](https://insights.sbomify.com/CVE-2019-12222/): Memory corruption in n/a (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-4743 and fix it if it is affected.

What it is: CVE-2022-4743 is a high-severity denial of service vulnerability in Redhat Enterprise Linux, published on 12 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-4743 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-2022-4743/ (Markdown: https://insights.sbomify.com/CVE-2022-4743/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-4743
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-4743
- OSV: https://osv.dev/vulnerability/CVE-2022-4743

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-4743/
Summaries are generated and may contain mistakes; the official description above is the record.