{
  "cveId": "CVE-2026-99150",
  "url": "https://patchblox.com/security/cve/CVE-2026-99150",
  "summary": "CVE-2026-99150 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-99150, released November 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "drm/amdgpu: don\u0027t drop the runtime PM reference twice in amdgpu_gpr",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  drm/amdgpu: don\u0027t drop the runtime PM reference twice in amdgpu_gpr  amdgpu_debugfs_gpr_read() drops its runtime PM reference right after reading the wave registers. When copying them to userspace fails, it jumps to the err label, which drops the reference a second time. A read into a bad buffer on Navi31 either steals a reference somebody else holds (power/runtime_usage goes from 1 to 0) or underflows the count:    amdgpu 0000:03:00.0: Runtime PM usage count underflow!  The registers are already in the kernel buffer at that point, so finish the hardware access first and copy the buffer with a single copy_to_user() instead of the put_user() loop with its own error path.  (cherry picked from commit 31035bbd74f7c3e10c163db875b8e67f8b50ee6a)",
  "published": "2026-10-28T11:17:35Z",
  "severity": "Low",
  "cvss": 3.3,
  "epss": 0.00183,
  "epssPercentile": 0.07966,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-99150",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.115-2",
      "fix": "DEBIAN-CVE-2026-99150",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99150",
      "released": "2026-11-03T18:58:21Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.13-1",
      "fix": "DEBIAN-CVE-2026-99150",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99150",
      "released": "2026-11-03T18:58:21Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}