# CVE-2024-50090: drm/xe/oa: Fix overflow in oa batch buffer

> A buffer overflow in the Linux kernel's Xe GPU driver can cause a system crash or assertion failure when reusing batch buffers for performance monitoring.

- **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 Nov 2024
- **Updated:** 5 Aug 2026
- **Also known as:** AZL-52617, AZL-52816, BELL-CVE-2024-50090, DEBIAN-CVE-2024-50090, GHSA-qq43-74jj-93fp, ROOT-OS-UBUNTU-2204-CVE-2024-50090, UBUNTU-CVE-2024-50090

## What is CVE-2024-50090?

CVE-2024-50090 is a high-severity vulnerability in Linux kernel, published on 5 Nov 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In the Linux kernel, the following vulnerability has been resolved:

drm/xe/oa: Fix overflow in oa batch buffer

By default xe_bb_create_job() appends a MI_BATCH_BUFFER_END to batch
buffer, this is not a problem if batch buffer is only used once but
oa reuses the batch buffer for the same metric and at each call
it appends a MI_BATCH_BUFFER_END, printing the warning below and then
overflowing.

[  381.072016] ------------[ cut here ]------------
[  381.072019] xe 0000:00:02.0: [drm] Assertion `bb->len * 4 + bb_prefetch(q->gt) <= size` failed!
               platform: LUNARLAKE subplatform: 1
               graphics: Xe2_LPG / Xe2_HPG 20.04 step B0
               media: Xe2_LPM / Xe2_HPM 20.00 step B0
               tile: 0 VRAM 0 B
               GT: 0 type 1

So here checking if batch buffer already have MI_BATCH_BUFFER_END if
not append it.

v2:
- simply fix, suggestion from Ashutosh

(cherry picked from commit 9ba0e0f30ca42a98af3689460063edfb6315718a)

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2024-50090?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2024-50090?

Apply the vendor's patch.

## Is CVE-2024-50090 being exploited?

There is no known exploitation of CVE-2024-50090 in the wild and no public exploit code.

## Other vulnerabilities in Linux kernel

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-50090 and fix it if it is affected.

What it is: CVE-2024-50090 is a high-severity vulnerability in Linux kernel, published on 5 Nov 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-2024-50090 in the wild and no public exploit code.

Affected product: Linux kernel. 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-2024-50090/ (Markdown: https://insights.sbomify.com/CVE-2024-50090/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-50090
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-50090
- OSV: https://osv.dev/vulnerability/CVE-2024-50090

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-50090/
Summaries are generated and may contain mistakes; the official description above is the record.