drm/shmem_helper: Check VMA boundaries for PMD mappings

{
  "id": "8fb607d1fcdd46a3181dba79a668fada6167a21f5f1d5b927c185b0709498e16",
  "url": "https://osv.dev/vulnerability/CVE-2026-80582",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/shmem_helper: Check VMA boundaries for PMD mappings",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/shmem_helper: Check VMA boundaries for PMD mappings In the ->huge_fault handler do not install a PMD huge page mapping if the huge page exceeds the boundaries of the VMA. All other ->huge_fault handlers have similar checks and the resulting mapping will trigger a VM_BUG_ON_VMA() if it ever reaches copy_pmd_range().",
    "evidence": "osv:CVE-2026-80582",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.1.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-80582",
      "aliases": [
        "CVE-2026-80582"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "fixed": "12803e89a1e593fd1e784dfe7453f5e392ccaff2"
                },
                {
                  "fixed": "617bbd08714857c1613d7c550d43a9092ec0fb97"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80582.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.0.0"
                },
                {
                  "fixed": "7.1.10"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80582.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.522905138Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/12803e89a1e593fd1e784dfe7453f5e392ccaff2",
        "https://git.kernel.org/stable/c/617bbd08714857c1613d7c550d43a9092ec0fb97",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80582.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-80582",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80582.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-80582",
        "evidence": "/id"
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    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 516753,
  "published_at": "2026-08-26T14:37:39.113+00:00"
}