{
  "cveId": "CVE-2026-52952",
  "url": "https://patchblox.com/security/cve/CVE-2026-52952",
  "summary": "CVE-2026-52952 is fixed in linux on 1 platform by DEBIAN-CVE-2026-52952 (version 7.0.10-1), released June 25, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  iommu: Fix WARN_ON in __iommu_group_set_domain_n...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  iommu: Fix WARN_ON in __iommu_group_set_domain_nofail() due to reset  In __iommu_group_set_domain_internal(), concurrent domain attachments are rejected when any device in the group is recovering. This is necessary to fence concurrent attachments to a multi-device group where devices might share the same RID due to PCI DMA alias quirks, but triggers the WARN_ON in __iommu_group_set_domain_nofail().  Other IOMMU_SET_DOMAIN_MUST_SUCCEED callers in detach/teardown paths, such as __iommu_group_set_core_domain and __iommu_release_dma_ownership, should not be rejected, as the domain would be freed anyway in these nofail paths while group-\u003Edomain is still pointing to it. So pci_dev_reset_iommu_done() could trigger a UAF when re-attaching group-\u003Edomain.  Honor the IOMMU_SET_DOMAIN_MUST_SUCCEED flag, allowing the callers through the group-\u003Erecovery_cnt fence, so as to update the group-\u003Edomain pointer. Instead add a gdev-\u003Eblocked check in the device iteration loop, to prevent any concurrent per-device detachment.",
  "published": "2026-06-24T17:17:05Z",
  "severity": "high",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
  "epss": 0.00177,
  "epssPercentile": 0.07309,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.0.10-1",
      "fix": "DEBIAN-CVE-2026-52952",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-52952",
      "released": "2026-06-25T17:23:13Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}