CVE-2024-27041

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux81927e2808be5adace93c2012d45d6938d3a7aa0 < e040f1fbe9abae91b12b074cfc3bbb5367b79811affected
LinuxLinux81927e2808be5adace93c2012d45d6938d3a7aa0 < ca2eb375db76fd50f31afdd67d6ca4f833254957affected
LinuxLinux81927e2808be5adace93c2012d45d6938d3a7aa0 < 1c62697e4086de988b31124fb8c79c244ea05f2baffected
LinuxLinux81927e2808be5adace93c2012d45d6938d3a7aa0 < 2a3cfb9a24a28da9cc13d2c525a76548865e182caffected
LinuxLinux5.14affected
LinuxLinux0 < 5.14unaffected
LinuxLinux6.6.23 <= 6.6.*unaffected
LinuxLinux6.7.11 <= 6.7.*unaffected
LinuxLinux6.8.2 <= 6.8.*unaffected
LinuxLinux6.9 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References