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Linux vulnerability

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid divide by zero by initializing dummy pitch to 1 [Why] If the dummy values in `populate_dummy_dml_surface_cfg()` aren't updated then they can lead to a divide by zero in downstream callers like CalculateVMAndRowBytes() [How] Initialize dummy value to a value to avoid divide by zero.

Published 4 Jul 2025Updated 7 Sep 20263 sources
CVSS 5.5
Overview Sources History

What happened

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid divide by zero by initializing dummy pitch to 1 [Why] If the dummy values in `populate_dummy_dml_surface_cfg()` aren't updated then they can lead to a divide by zero in downstream callers like CalculateVMAndRowBytes() [How] Initialize dummy value to a value to avoid divide by zero.

Affected versions

Linux: 7966f319c66d9468623c6a6a017ecbc0dd79be75 through before 03a3dbca3b8e55b88958ce1f54aaf678ded11c79 (git); 7966f319c66d9468623c6a6a017ecbc0dd79be75 through before 8044f981b2cf8c32fe1bd5d1fc991552cdf7ffe0 (git); 7966f319c66d9468623c6a6a017ecbc0dd79be75 through before 7e40f64896e8e3dca471e287672db5ace12ea0be (git); 6.7 Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

  • Apply vendor-provided updates or mitigations.
  • Review affected product exposure and access logs.

Public PoC references

No public PoC reference has passed the current publication threshold.

CorrectionsReport an issue