# CVE-2022-48732: drm/nouveau: fix off by one in BIOS boundary checking


- **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
- **Fix available:** Yes
- **Published:** 20 Jun 2024
- **Updated:** 11 May 2026
- **Also known as:** DEBIAN-CVE-2022-48732, GHSA-vjh8-wgcx-46j4, UBUNTU-CVE-2022-48732

## What is CVE-2022-48732?

CVE-2022-48732 is a high-severity vulnerability in Linux kernel, published on 20 Jun 2024. 

### Official description

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

drm/nouveau: fix off by one in BIOS boundary checking

Bounds checking when parsing init scripts embedded in the BIOS reject
access to the last byte. This causes driver initialization to fail on
Apple eMac's with GeForce 2 MX GPUs, leaving the system with no working
console.

This is probably only seen on OpenFirmware machines like PowerPC Macs
because the BIOS image provided by OF is only the used parts of the ROM,
not a power-of-two blocks read from PCI directly so PCs always have
empty bytes at the end that are never accessed.

Weakness: CWE-193 (Off-by-one Error)

## Which versions are affected by CVE-2022-48732?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2022-48732?

Upgrade to a fixed version.

## Is CVE-2022-48732 being exploited?

There is no known exploitation of CVE-2022-48732 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-2022-48732 and fix it if it is affected.

What it is: CVE-2022-48732 is a high-severity vulnerability in Linux kernel, published on 20 Jun 2024. 
Exploitation: There is no known exploitation of CVE-2022-48732 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-2022-48732/ (Markdown: https://insights.sbomify.com/CVE-2022-48732/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-48732
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-48732
- OSV: https://osv.dev/vulnerability/CVE-2022-48732

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-48732/
Summaries are generated and may contain mistakes; the official description above is the record.