{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ccc21213f013834b484cdcc738e282f963fcfc97"
            },
            {
              "fixed": "0cd028806efc148a75d4acf711d21db335a89661"
            },
            {
              "fixed": "0735c54804c709d1b292f3b6947cfb560b2ce552"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.0.0"
            },
            {
              "fixed": "7.0.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64152.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu: Handle unmap error when iommu_debug is enabled\n\nSashiko noticed a latent bug where the map error flow called iommu_unmap()\nwhich calls iommu_debug_unmap_begin()/iommu_debug_unmap_end() however\nsince this is an error path the map flow never actually established the\noriginal iommu_debug_map() it will malfunction.\n\nLift the unmap error handling into iommu_map_nosync() and reorder it so\nthe trace_map()/iommu_debug_map() records the partial mapping and then\nimmediately unmaps it. This avoid creating the unbalanced tracking and\nprovides saner tracing instead of a unmap unmatched to any map.",
  "id": "CVE-2026-64152",
  "modified": "2026-07-22T05:30:06.524030651Z",
  "published": "2026-07-19T15:40:41.354Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0735c54804c709d1b292f3b6947cfb560b2ce552"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0cd028806efc148a75d4acf711d21db335a89661"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64152.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64152"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "iommu: Handle unmap error when iommu_debug is enabled"
}