{
  "cveId": "CVE-2026-43191",
  "url": "https://patchblox.com/security/cve/CVE-2026-43191",
  "summary": "CVE-2026-43191 is fixed in 16 products on 1 platform, first by DEBIAN-CVE-2026-43191, released May 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "drm/amd/display: Adjust PHY FSM transition to TX_EN-to-PLL_ON for TMDS on DCN35",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  drm/amd/display: Adjust PHY FSM transition to TX_EN-to-PLL_ON for TMDS on DCN35  [Why] A backport of the change made for DCN401 that addresses an issue where we turn off the PHY PLL when disabling TMDS output, which causes the OTG to remain stuck.  The OTG being stuck can lead to a hang in the DCHVM\u0027s ability to ACK invalidations when it thinks the HUBP is still on but it\u0027s not receiving global sync.  The transition to PLL_ON needs to be atomic as there\u0027s no guarantee that the thread isn\u0027t pre-empted or is able to complete before the IOMMU watchdog times out.  [How] Backport the implementation from dcn401 back to dcn35.  There\u0027s a functional difference in when the eDP output is disabled in dcn401 code so we don\u0027t want to utilize it directly.",
  "published": "2026-05-06T12:16:37Z",
  "severity": "Moderate",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00162,
  "epssPercentile": 0.05395,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-43191",
  "fixes": [
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  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
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}