# CVE-2024-27041: linux: In the Linux kernel, the following vulnerability has been resolved:  drm/amd/display: fix NULL checks for adev->dm.dc...

CVE-2024-27041 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-27041, released May 1, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-27041
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0027
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 1, 2024

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.7.12-1 | [DEBIAN-CVE-2024-27041](https://patchblox.com/security/data/fix/linux/debian-cve-2024-27041.md) | May 1, 2024 |
| Linux | linux Debian 14 | 6.7.12-1 | [DEBIAN-CVE-2024-27041](https://patchblox.com/security/data/fix/linux/debian-cve-2024-27041.md) | May 1, 2024 |

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