ntfs: fix kmap_local_page() usage in compress

{
  "id": "17e2a0d3944597887ad93af954cc7855d629e2735b70a124d5003b859a2024af",
  "url": "https://osv.dev/vulnerability/CVE-2026-90134",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ntfs: fix kmap_local_page() usage in compress",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ntfs: fix kmap_local_page() usage in compress Several compressed I/O paths discard the address returned by kmap_local_page() and later access or unmap the page using page_address(). This is invalid for highmem pages, and local mappings must also be unmapped using the address returned by kmap_local_page(). Map each destination page in ntfs_decompress() only while producing the current sub-block. Use memcpy_from_page(), memcpy_to_page(), and memzero_page() for the other page accesses. Remove unnecessary local mappings from ntfs_write_cb(), where pages are accessed through the vmap() mapping.",
    "evidence": "osv:CVE-2026-90134",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.2.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-90134",
      "aliases": [
        "CVE-2026-90134"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "495e90fa334828d4119061e2726af51d0a0fb4ed"
                },
                {
                  "fixed": "950e2ecc7aec21af24b05bc661a097a81c670409"
                },
                {
                  "fixed": "6e03fbd5f772ad24ea64f7632e4d0d73184787ca"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90134.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.1.0"
                },
                {
                  "fixed": "7.2.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90134.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.591641187Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/6e03fbd5f772ad24ea64f7632e4d0d73184787ca",
        "https://git.kernel.org/stable/c/950e2ecc7aec21af24b05bc661a097a81c670409",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90134.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-90134",
        "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/2026/90xxx/CVE-2026-90134.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-90134",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 513809,
  "published_at": "2026-09-17T16:06:33.888+00:00"
}