# CVE-2023-45913: Null dereference in n/a

> A disputed NULL pointer dereference in Mesa's DRI2 handling could cause a denial of service when X11 sends unexpected events during DRI3 usage.

- **Severity:** Medium 6.2 (`CVSS:3.1/AV:L/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 27 Mar 2024
- **Updated:** 4 Nov 2025
- **Also known as:** DEBIAN-CVE-2023-45913, GHSA-q4fq-56x3-rq98

## What is CVE-2023-45913?

CVE-2023-45913 is a medium-severity vulnerability in n/a, published on 27 Mar 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Mesa v23.0.4 was discovered to contain a NULL pointer dereference via the function dri2GetGlxDrawableFromXDrawableId(). This vulnerability is triggered when the X11 server sends an DRI2_BufferSwapComplete event unexpectedly when the application is using DRI3. NOTE: this is disputed because there is no scenario in which the vulnerability was demonstrated.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2023-45913?

It affects 1 product.


Products: Mesa3d Mesa.

## How do I fix CVE-2023-45913?

No fix published yet.

## Is CVE-2023-45913 being exploited?

There is no known exploitation of CVE-2023-45913 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2026-40393](https://insights.sbomify.com/CVE-2026-40393/): Memory corruption in Mesa (high 8.1)
- [CVE-2023-45931](https://insights.sbomify.com/CVE-2023-45931/): Null dereference in n/a (high 7.5)
- [CVE-2013-1993](https://insights.sbomify.com/CVE-2013-1993/): Integer overflow in n/a (medium 6.8)
- [CVE-2023-45919](https://insights.sbomify.com/CVE-2023-45919/): Memory corruption in n/a (medium 5.3)
- [CVE-2023-45922](https://insights.sbomify.com/CVE-2023-45922/): Null dereference in n/a (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-45913 and fix it if it is affected.

What it is: CVE-2023-45913 is a medium-severity vulnerability in n/a, published on 27 Mar 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-2023-45913 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-2023-45913/ (Markdown: https://insights.sbomify.com/CVE-2023-45913/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-45913
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-45913
- OSV: https://osv.dev/vulnerability/CVE-2023-45913

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-45913/
Summaries are generated and may contain mistakes; the official description above is the record.