Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 81927e2808be5adace93c2012d45d6938d3a7aa0 before e040f1fbe9abae91b12b074cfc3bbb5367b79811; affected 81927e2808be5adace93c2012d45d6938d3a7aa0 before ca2eb375db76fd50f31afdd67d6ca4f833254957; affected 81927e2808be5adace93c2012d45d6938d3a7aa0 before 1c62697e4086de988b31124fb8c79c244ea05f2b; affected 81927e2808be5adace93c2012d45d6938d3a7aa0 before 2a3cfb9a24a28da9cc13d2c525a76548865e182c |
| Linux / Linux | affected 5.14; unaffected 0 before 5.14; unaffected 6.6.23 through 6.6.*; unaffected 6.7.11 through 6.7.*; unaffected 6.8.2 through 6.8.*; unaffected 6.9 through * |
CWE
No CWE identifiers supplied.
References
- 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
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.