cve-2024-27041
Vulnerability from cvelistv5
Published
2024-05-01 12:54
Modified
2024-12-19 08:53
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1c62697e4086de988b31124fb8c79c244ea05f2b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2a3cfb9a24a28da9cc13d2c525a76548865e182c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ca2eb375db76fd50f31afdd67d6ca4f833254957
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e040f1fbe9abae91b12b074cfc3bbb5367b79811
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1c62697e4086de988b31124fb8c79c244ea05f2b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2a3cfb9a24a28da9cc13d2c525a76548865e182c
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ca2eb375db76fd50f31afdd67d6ca4f833254957
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e040f1fbe9abae91b12b074cfc3bbb5367b79811
Impacted products
Vendor Product Version
Linux Linux Version: 81927e2808be5adace93c2012d45d6938d3a7aa0
Version: 81927e2808be5adace93c2012d45d6938d3a7aa0
Version: 81927e2808be5adace93c2012d45d6938d3a7aa0
Version: 81927e2808be5adace93c2012d45d6938d3a7aa0
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   Linux Linux Version: 5.14
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