{
  "cveId": "CVE-2026-89812",
  "url": "https://patchblox.com/security/cve/CVE-2026-89812",
  "summary": "CVE-2026-89812 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-89812, released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "drm/amdgpu: force complete the MES ring fences on reset",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  drm/amdgpu: force complete the MES ring fences on reset  The MES scheduler ring has no drm scheduler (no_scheduler = true), so it is skipped by the force-completion loop in amdgpu_device_pre_asic_reset(). It uses a polling fence whose hw value lives in wb (GTT) memory and survives a MODE1 reset, while fence_drv.sync_seq keeps advancing for every packet.  When the reset is triggered because MES itself stopped responding, the timed-out packets advance sync_seq past the last hw fence value MES wrote. After resume the first MES submission polls forever on a seq that is never written back, failing the resume and wedging the box on a second reset:    amdgpu: MES ring buffer is full.   amdgpu: *ERROR* ring gfx_0.0.0 test failed (-110)   amdgpu: resume of IP block \u003Cgfx_v11_0\u003E failed -110   amdgpu: GPU reset end with ret = -110  Force complete the MES scheduler ring fences together with the scheduler rings so their hw fence is realigned to sync_seq.  v2: cover all XCCs (one scheduler ring each), not just mes.ring[0].",
  "published": "2026-09-16T11:16:46Z",
  "severity": "Moderate",
  "cvss": 5.5,
  "epss": 0.00209,
  "epssPercentile": 0.11085,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-89812",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.115-2",
      "fix": "DEBIAN-CVE-2026-89812",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89812",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-89812",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89812",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}